Corvus (BTD6)

Corvus
Spirit Walker

Corvus works well on the frontline, weakening nearby Bloons to harvest Mana and channel powerful energies through his Spirit companion.

Cost	$1,125 — Easy $1,325 — Medium $1,430 — Hard $1,590 — Impoppable With Hero Favors: $1,015 — Easy $1,195 — Medium $1,290 — Hard $1,430 — Impoppable
XP curve	×1.425 (levels up at ×0.7018 the normal rate)
Rogue Legends party	2-0-0 Sniper Monkey 0-0-2 Wizard Monkey Tit For Tat Legendary
Frontier Legends attributes	Recruit cost: $9,960 Starting level: 5 Piercing Kickin' Undertaker
Introduced	Version 40.0

Corvus is a Hero in Bloons TD 6, introduced in version 40.0. He can be unlocked for 7,000 starting at level 35. He controls a flying Spirit that attacks Bloons, while he haunts nearby Bloons to gather extra Mana. Additional spells can be cast by spending Mana in his Spellbook. He also passively generates Mana at a constant rate provided that Bloons enter the screen.

Corvus is assisted by a Spirit sub-tower that flies around the map seeking Bloons out and ramming into them to deal damage. It cannot damage Lead Bloons or Purple Bloons and cannot detect Camo Bloons.
Corvus inflicts the strongest Bloon within his range with a Haunt effect every 3 seconds. It does no damage by itself, but it strips Regrow and Purple properties and causes the target to take extra damage from things that deal energy, plasma, fire, or frigid damage, including his Spirit. Haunted Bloons explode when destroyed, damaging other Bloons nearby and generating Mana. He cannot Haunt Camo Bloons or MOAB-Class Bloons by default.
Corvus provides access to the Spellbook, an interface that allows the player to spend Mana to cast spells with a variety of effects. Corvus unlocks more spells and enhances his previous spells as he levels up.
Starting at level 8, he gains Spiritual Balance, which multiplies his Mana gains whenever he has low Mana.
Starting at level 11, he gains Spiritual Attunement, which increases damage and movement speed of the Spirit depending on his current Mana.
He has three Activated Abilities:
- Soul Harvest (level 3) — Deals significant damage to all Bloons near him and generates extra Mana based on the amount of damage dealt, with a minimum of 100 Mana per use.
- Spirit Walk (level 7) — Teleports him to any position on the map that he can be placed on.
- Dark Ritual (level 10) — Creates an aura that damages nearby Bloons and generates Mana off of the damage dealt for a short time. Starting at level 12, it also siphons from nearby Necromancer: Unpopped Army and Prince of Darkness Graveyards and converts it into Mana.

Mechanics

Spirit

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The spirit is a flying sub-tower that accelerates towards targets and swipes a short distance against them. If no visible Bloons are on screen, it flies back to Corvus and periodically wanders around his base range. It does not benefit from external buffs that do not affect sub-towers, such as Alchemist Brews and Overclocking, nor be affected by external attack speed buffs, such as Jungle Drums and Call to Arms (but not the pierce bonus). However, it can receive all other buffs like Radar Scanner, Monkey Town, and the pierce from the Abyss Dweller.

Levels
Level	Effect
2	Pierce increased from 4 to 6.
4	Damage increased to 2.
6	Damage increased to 3.
9	Damage increased to 5 and does +1 MOAB-Class damage.
11	Gains Spiritual Attunement.
14	Damage increased to 10, and MOAB-Class damage bonus increased to +5.
16	Damage increased to 20.
20	Damage increased to 40, and MOAB-Class damage bonus increased to +10.

Mana

Corvus has 800 max Mana. Primarily, he gains Mana from popping Bloons that were affected by his Haunted effect. Additionally, he can passively generate 2 Mana every second, provided Bloons still spawn during the round. He can generate more mana via his Soul Harvest and Dark Ritual abilities.

At Level 8+, he gains Spiritual Balance, which increases his Mana gains when his Mana is low.

Haunt

Haunt is an effect that Corvus inflicts on the strongest Bloon within his range every 3 seconds (affected by attack speed buffs). Haunted Bloons have the following properties:

If it is a Regrow Bloon, it loses its Regrow property.
If it is a Purple Bloon, it loses its immunities.
It takes +1 damage from projectiles and damage over time sources that deal energy, plasma, fire or frigid damage (including his own Spirit and Dark Ritual ability).
When it and all of its children are popped, it generates an explosion that damages other Bloons nearby. It has a blast radius of 24 distance units and deals 2 energy-type damage to up to 4 Bloons. The explosion benefits from More 'Splody. Corvus restores 2 Mana per layer the Haunted Bloon had when it was first afflicted (affected by Spiritual Balance).

Corvus cannot Haunt MOAB-Class Bloons initially and cannot Haunt Camo Bloons without being granted Camo detection. He cannot Haunt Golden Bloons or Boss Bloons at all.

Levels
Level	Effect
6	Explosion pierce increases to 8 and damage increases to 4.
12	Explosion pierce increases to 16 and damage increases to 10.
17	Haunted Bloons take +2 damage from energy, plasma, fire, and frigid damage instead of +1. Explosion damage increases to 30.
19	Can now target MOAB-Class Bloons.

Spellbook

The Spellbook is an interface that allows the player to store Corvus's Mana and spend it to cast spells. It starts with the Spear, Repel, and Nourishment spells by default and can store up to 800 Mana. Corvus can activate multiple spells at once, though certain spells cannot be active when another spell is active. Spells are allowed to be activated or deactivated between rounds.

Corvus gains more spells as he levels up, having access to 16 spells in total starting at level 13. There are two types of spells:

Spells on the top row consume a certain amount of Mana each second, in addition to costing Mana to cast in the first place. They remain active as long as Corvus keeps feeding them Mana and have no cooldown, and the player can deactivate them at any time.
Other spells do not drain Mana over time, but have a limited duration and a cooldown period. Unlike Activated Abilities, the cooldown does not start until the duration ends. They are not affected by ability cooldown modifiers such as Energizer.

On desktop, the Spellbook can be toggled with the Monkey Special hotkey (PageDown by default) and each spell slot can be assigned to a custom hotkey under Advanced Hotkeys.

Continuous spells
Text	Cost	Level unlocked
Spear The Spirit gains a slow firing energy spear that arcs off small chain lightnings each time they pierce.	100 + 10 per sec.	1
Aggression The Spirit grows in size and attacks faster.	50 + 5 per sec.	5
Malevolence The Spirit merges with the Spellbook and releases an intense, Bloon popping mist around Corvus.	60 + 6 per sec.	7
Storm The Spirit unleashes an onslaught of energy blades.	120 + 12 per sec.	8

Duration-based spells
Text	Cost	Duration	Cooldown	Level unlocked
Repel The Spirit gains a forcefield that pushes Bloons back whenever they are touched.	150	15s	45s	1
Echo The Spirit splits itself in two. Commands sent to one are sent to both. The Echo always targets first.	300	25s	55s	3
Haste The Spirit movement and turning speed are greatly increased.	50	20s	5s	3
Trample A stampede of spirits moves down the track, crushing Bloons they pass.	180	N/A	45s	4
Frostbound The Spirit freezes Bloons that it hits for a short time.	220	10s	60s	5
Ember The Spirit leaves a fire droplet on the track every few seconds that burns Bloons going through them.	150	15s	45s	6
Ancestral Might The Spirit merges with the Spellbook, channeling the hand of the Ancient One to do massive damage.	550	15s	90s	7
Overload The Spirit detonates with overwhelming energy. A moment later the Spirit rebuilds from the whispy remnants.	620	10s	90s	13
Nourishment Sacrifices all Mana and converts it into Hero XP. Cooldown cannot be modified.	0	N/A	60s	1
Soul Barrier Temporarily use Mana in place of lives when Bloons get past your defenses.	40	10s	60s	4
Vision Temporarily lets the Spirit see Camo Bloons, and remove Camo property from anything it hits.	170	15s	30s	5
Recovery All spells are stopped, all attacks are paused. Corvus and the Spirit go into a deep meditation to replenish spells at a rapid rate.	140	90s	30s	10

Spiritual Balance

Spiritual Balance is unlocked at level 8. It multiplies the amount of Mana Corvus generates from all sources depending on how much Mana he currently has. At 80 Mana or lower, he generates 3× (+200%) as much Mana, and at 280 Mana or more, he does not generate extra Mana. The modifier scales linearly with how much Mana he has. For example, having 180 Mana means he generates +100% more Mana. This also affects Soul Harvest and Dark Ritual.

Spiritual Attunement

Spiritual Attunement is unlocked at level 11. It increases the damage and movement speed of the Spirit depending on how much Mana Corvus has in his Mana Pool, capping at 20% faster movement and 150% more damage with a full Mana Pool. The modifier scales linearly with how much Mana he has. For example, having 400/800 Mana means the Spirit moves 10% faster and deals 75% more damage.

Abilities

Soul Harvest

Soul Harvest is unlocked at level 3. It releases a blast that damages up to 20 Bloons within his range and restores 100 Mana plus 1 per point of damage it deals. It deals 20 damage at level 3, increasing to 30 base damage and +10 bonus damage to Ceramic Bloons at level 11. It starts with a 40-second cooldown and lowers by 0.5 seconds per level after level 3, to a minimum of 31.5 seconds at level 20. It can only be used up to 8 times per round and is disabled if the round lasts for more than 3 minutes.

Spirit Walk

Spirit Walk is unlocked at level 7. It allows Corvus to instantly teleport to any location on the map of the player's choosing that he can be placed on, functioning identically to Dark Champion's and Legend of the Night's version of Darkshift. It has a 20-second cooldown.

Dark Ritual

Dark Ritual is unlocked at level 10. It creates an aura around Corvus that deals 1 plasma-type damage to up to 100 Bloons within it every 0.2 seconds for 10 seconds, which is affected by the Plasma damage bonuses from Haunt. He restores 1 Mana per point of damage dealt by the aura, except damage dealt to regenerated Regrow Bloon layers. Dark Ritual cannot target Purple Bloons unless he is able to damage them. It has a 90-second cooldown, and can be affected by external buffs such as Berserker Brew.

Starting at level 12, activating the ability also removes 10% of the points from the Graveyards of Wizard Monkeys with the Necromancer: Unpopped Army, Prince of Darkness, or Magus Perfectus upgrades within his range, and converts those points into Mana. Multiple Graveyards will not stack. Necromancer Graveyards take precedent over Prince of Darkness, regardless of proximity to Corvus.

Levels

Level	Description
1	Haunted Bloons are weakened and explode when popped, adding Mana to the Mana Pool. The Spirit attacks Bloons anywhere on the map at Corvus' command. Learns: Spear, Nourishment, Repel.
2	The Spirit grows in size and can hit more Bloons.
3	Soul Harvest ability: Harvests nearby Bloons in an instant. Learns: Echo, Haste.
4	The Spirit does more damage. Learns: Soul Barrier, Trample
5	Learns: Frostbound, Aggression, Vision
6	Increased damage when Haunted Bloons explode. The Spirit does more damage. Learns: Ember
7	Spirit Walk ability: Corvus can shift to a valid location. Learns: Ancestral Might, Malevolence
8	Spiritual Balance means the Mana Pool fills faster when it is nearly empty. Haste gives increased speed and agility. Learns: Storm
9	The Spirit's base damage increased and does extra damage to MOABs. Frostbound can hit MOABs. Soul Barrier can block more Bloons from leaking.
10	Dark Ritual ability: Harvests a huge number of Bloons near Corvus. Trample does more damage to more Bloons. Learns: Recovery
11	Spiritual Attunement means the Spirit grows in power as the Mana Pool fills. Soul Harvest does more damage, and extra damage to Ceramic Bloons. Frostbound gains permafrost.
12	Increased damage when Haunted Bloons explode. Spear does more damage. Repel can push MOABs.
13	Ancestral Might does more damage. Learns: Overload
14	The Spirit does more damage to Bloons. Malevolence does more damage and extra damage to Ceramic Bloons.
15	Ember's fire drops more often and does more damage. Nourishment gives more XP per Mana.
16	Corvus has increased range. The Spirit does more damage to Bloons.
17	Haunted Bloons are weaker, and explosions do more damage. Soul Barrier can block more Bloons from leaking.
18	Storm's energy blades hit more Bloons and do more damage. Spear does more damage.
19	Corvus can Haunt MOAB-Class Bloons. Trample does more damage to Bloons.
20	The Spirit base damage increases and does extra damage to MOABs. Ancestral Might does more damage. Overload does more damage.
This list was last updated for: version

XP requirements

Level	XP required	Rounds to level up				Rounds to level up w/
Level	XP required	Beginner	Intermediate	Advanced	Expert	Beginner	Intermediate	Advanced	Expert
2	257 (257)	4 (4)	4 (4)	4 (4)	4 (4)	—	—	—	—
3	656 (913)	5 (9)	4 (8)	4 (8)	4 (8)	1 (1)	1 (1)	1 (1)	1 (1)
4	1,425 (2,338)	5 (14)	6 (14)	5 (13)	4 (12)	9 (10)	8 (9)	8 (9)	7 (8)
5	2,651 (4,989)	7 (21)	6 (20)	6 (19)	7 (19)	7 (17)	7 (16)	7 (16)	7 (15)
6	4,674 (9,663)	8 (29)	8 (28)	8 (27)	7 (26)	8 (25)	8 (24)	7 (23)	7 (22)
7	7,382 (17,045)	8 (37)	7 (35)	7 (34)	7 (33)	8 (33)	7 (31)	7 (30)	7 (29)
8	11,856 (28,901)	9 (46)	9 (44)	9 (43)	8 (41)	8 (41)	9 (40)	8 (38)	8 (37)
9	13,367 (42,268)	8 (54)	8 (52)	7 (50)	7 (48)	8 (49)	7 (47)	7 (45)	7 (44)
10	19,409 (61,677)	8 (62)	8 (60)	8 (58)	9 (57)	8 (57)	8 (55)	8 (53)	7 (51)
11	23,342 (85,019)	8 (70)	8 (68)	7 (65)	7 (64)	7 (64)	7 (62)	7 (60)	7 (58)
12	20,520 (105,539)	5 (75)	5 (73)	6 (71)	5 (69)	6 (70)	5 (67)	5 (65)	5 (63)
13	23,726 (129,265)	6 (81)	5 (78)	5 (76)	5 (74)	5 (75)	5 (72)	5 (70)	5 (68)
14	21,290 (150,555)	5 (86)	5 (83)	4 (80)	4 (78)	4 (79)	4 (76)	4 (74)	4 (72)
15	23,342 (173,897)	4 (90)	4 (87)	5 (85)	4 (82)	4 (83)	4 (80)	4 (78)	4 (76)
16	25,394 (199,291)	5 (95)	5 (92)	4 (89)	4 (86)	5 (88)	5 (85)	4 (82)	4 (80)
17	27,446 (226,737)	5 (100)	4 (96)	4 (93)	5 (91)	4 (92)	4 (89)	4 (86)	3 (83)
18	29,498 (256,235)	4 (104)	5 (101)	5 (98)	4 (95)	4 (96)	4 (93)	4 (90)	4 (87)
19	23,470 (279,705)	4 (108)	3 (104)	3 (101)	3 (98)	3 (99)	3 (96)	3 (93)	3 (90)
20	24,624 (304,329)	3 (111)	3 (107)	3 (104)	3 (101)	3 (102)	3 (99)	3 (96)	3 (93)

Strategy

Corvus has a high skill ceiling, and requires micromanagement to take full advantage of him. He has several strong spells that assist for each stage of the game. Use his Nourishment to allow him to level up quicker, but also save enough Mana to afford spells to defend. Overall, he stands out in CHIMPS and Half Cash, because his spells can save a lot of cash if used properly. Despite being notorious as "only good for sweaty tryhards", he is still able to complete safe Black Border CHIMPS runs even if the player makes errors with his Mana and spell management.

Generally speaking, he is strong in the early-game with his Spirit, and scales his power throughout the game if he accelerates his leveling rate with fair optimization of Nourishment. For the mid-game, his role is a mid-game carry alongside a few other towers. In the late-game, Ancestral Might and Overload are his best assets for damaging heavier targets, while Frostbound and Repel allow him to effectively control smaller ones. Echo is an essential spell if chaining multiple spells together on difficult rounds. Corvus can prove effective with cleanup towers to act as a safety net, such as Spiked Mines or Perma-Spike, but the versatility his spells provide make him a good choice with nearly any tower.

Corvus is very effective on maps with only one active lane per round, such as Erosion, but is a bit weaker on multi-lane maps due to needing Haste to travel between lanes quickly. Setting his targeting on Close can avoid chasing, allowing him to much more effectively focus down one lane.

Tips

Corvus gets more Mana from Haunting stronger Bloons, so he should be placed in areas where the Bloons will reach him before your main sources of DPS. For example, if all your attacking towers are concentrated in the center of Monkey Meadow, then he should be placed closer to the entrance.
In the early game, use Spear for Bloon rushes, Vision for Camo Bloons, and Ancestral Might against the round 40 MOAB.
In the mid game, use Ember and/or Trample for dense Bloons and Repel / Frostbound to stall MOAB-Class Bloons.
Use Nourishment on easy rounds when other spells aren't needed to gain more XP.
Use Recovery before difficult rounds if the spells needed have significant cooldown left.
Haste is a combo spell to reduce wasted time moving around the Spirit.

Update history

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Version 40.1

“

We rarely make .1 changes for balance however seeing community response already confirm some of the thoughts we wanted to gauge in action, and given the upcoming holiday break, we wanted to take a quick pass to even out some of the many different parts of Corvus to all feel fun in their own way with their own fair place among the others. Given it seems he is already performing quite well it did feel necessary to shift power between parts rather than raw buffs all around, however we won’t go into detail on what we feel here as we still want to see what synergies players work out on their own.
— Update notes

”

Levels	Changes
All	Spirit: max movement speed reduced ― 200 → 125
1	Spirit: pierce reduced ― 6 → 5
2+	Spirit: pierce reduced ― 10 → 8
10+	Dark Ritual: duration increased ― 6s → 12s Dark Ritual: rehit and pierce refresh interval increased ― 0.1s → 0.2s

Spell	Changes
Spear	Main projectile speed reduced ― 300 → 250 Main projectile lifespan reduced ― 1.6666s → 1.6s Lightning pierce reduced ― 4 → 3
Repel	Pierce reduced ― infinite → 10
Haste	Cooldown reduced ― 30s → 15s Duration increased ― 10s → 20s Levels 3–7: bonus movement speed increased ― 1.25x → 1.5x Levels 8: bonus movement speed increased ― 1.35x → 1.8x
Frostbound	Pierce reduced ― infinite → 10
Malevolence	Attack cooldown increased ― 0.3s → 0.5s Damage is no longer capped Levels 7–13: damage increased ― 1 → 2 Levels 14+: damage increased ― 2 → 3 Levels 14+: bonus Ceramic damage increased ― +3 → +5
Ancestral Might	Pierce reduced ― 20 → 14
Overload	Damage now soaks through MOAB-Class layers

Version 40.2

No longer generates Mana from regenerated Regrow Bloons (undocumented) (bug fix)

Version 41.0

“

We all knew Corvus would have to come down, he’ll most likely still need some further tweaks after this but we want to settle him in slowly and not overnerf things too much - as he deserves to keep a high ranking spot among the heroes.
— Update notes

”

Levels	Changes
1+	Haunt: Can no longer target Golden Bloons (bug fix) Spirit: No longer grants range to Advanced Intel (bug fix)
3+	Soul Harvest: Cooldown increased ― 30s → 35s

Spell	Changes
Spear	Explosion delay increased ― 0.05s → 0.15s Main projectile now has a pierce limit of 10
Echo	Cooldown increased ― 45s → 55s
Trample	Levels 4–9: Damage increased ― 12 → 15
Soul Barrier	Mana-lives now allow life lost effects to trigger (bug fix)
Ancestral Might	Levels 7–12: Damage reduced ― 100 → 50 Levels 13–19: Damage reduced ― 250 → 150 Level 20: Damage reduced ― 500 → 400
Overload	Levels 13–19: Damage reduced ― 3000 → 1500 Level 20: Damage reduced ― 8000 → 4000
Overload / Recovery	Disabling Recovery no longer bypasses Overload downtime (bug fix)

Version 42.0

“

We wanted to avoid passive stall mana gain with Corvus initially, however in order to grant a little bit more leeway for co-op splits or general bad placement, we are allowing Corvus to passively generate a little mana over time while Bloons are spawning but reducing the mana gain from popping Haunted Bloons
— Update notes

”

Levels	Changes
All	Haunt: mana gain per layer reduced ― 5 → 3 Corvus now passively gains 1 mana/s so long as Bloons are spawning

“

Higher levels of Corvus feel they have far too much mana which leads to difficult to maintain and less interesting spam of spells, so we’re lowering the range in which Spiritual Balance grants bonus mana recovery
— Update notes

”

Levels	Changes
8+	Spiritual Balance: curve decay start point ― 40% → 25% Spiritual Balance: curve decay end point ― 80% → 65%

Spell

Changes

Haste

“

Haste is a combo-only spell with little value on its own without buffing other spells - so we’re making it much cheaper to realistically combo more often without being such a large mana drain.
— Update notes

”

Mana cost reduced ― 75 → 50

Storm

“

Storm is a little too effective both at AoE cleanup and also single target, so the rate is being reduced slightly
— Update notes

”

Attack cooldown increased ― 0.1s → 0.12s

Recovery / Nourishment

“

The cycle of Recovery into Nourishment over and over to maximize XP earnings while never having corvus attack ruins the fun of actually playing this hero, so we’re ending this.
— Update notes

”

Recovery spell no longer applies cooldown reduction to Nourishment

Version 43.0

“

As Corvus’s power is still considerably top-heavy the mid game performance is being improved with buffs to underused spells, but also top-end power of his 2 most powerful level 20 spells is being reduced to lessen the pressure to ‘need’ to get this far.
— Update notes

”

Levels	Changes
3+	Soul Harvest: Cooldown increased by 5s at all levels ― 35s → 40s

Subject	Changes
Spear	Lightning: Pierce increased ― 3 → 4
Aggression	Mana cost reduced ― 80 → 50
Malevolence	Damage rate increased ― 0.5s → 0.3s Damage increased ― 3 → 5
Ancestral Might	Level 20: Damage reduced ― 400 → 300
Overload	Level 20: Damage reduced ― 4,000 → 3,000

Version 44.0

“

Corvus has taken some time off over the last update and his studies have now paid off! Corvus now has a greatly reduced time taken to reach max level, and his Spiritual Attunement buff has improved to grant much more power when he is not spending mana.
— Update notes

”

Levels	Changes
All	XP curve reduced ― ×1.71 → ×1.425
11+	Spiritual Attunement: Max damage modifier increased ― ×1.8 → ×2.5

Version 45.0

“

We’re happy with how Corvus fits into his new XP curve, although a few edges do need to be smoothed out. First, Corvus early game is kinda broken, for now we’re not touching the spirit itself but have reduced the damage of the Spear spell. Frostbound is currently much better than Repel, so we have doubled Repel’s knockback against non-moabs & increased its radius along with some small nerfs to Frostbound - note that while Frostbound’s freeze on MOABs is being reduced the duration is still longer than the re-application rate so this will rarely be noticed. For Dark Ritual QoL, it will no longer eat up pierce on purple Bloons unless it is able to damage them. Finally, Overload & Might are still somewhat tuned around the higher XP curve and need some nips to their power.
— Update notes

”

Levels	Changes
10+	Dark Ritual: Now ignores Purple unless buffed to be able to damage them

Spell	Changes
Repel	Pushback effect radius increased ― 8 → 10 Pushback amount increased ― 4 → 8 Note: Pushback for MOAB-Class at higher tiers remains the same
Spear	Levels 1–11: damage reduced ― 2 → 1
Frostbound	Mana cost increased ― 170 → 190 Cooldown increased ― 45s → 50s Levels 9+: freeze duration for MOAB-Class reduced ― 0.25s → 0.125s
Ancestral Might	Mana cost increased ― 440 → 550
Overload	Mana cost increased ― 520 → 620 Levels 13–19: damage reduced ― 1500 → 1150 Level 20: damage reduced ― 3000 → 2250

Version 46.0

“

We don’t want to knock him down hard before the holidays, but Corvus’ placement cost is being increased and Spirit move speed is being shifted from passive power into the Haste spell with Haste’s cooldown also being cut so it can almost always be available when required at the cost of active mana management.
— Update notes

”

Levels	Changes
All	Placement cost increased ― $925 → $1,025 Spirit: Maximum movement speed reduced ― 125 → 100

Spell	Changes
Haste	Cooldown reduced ― 15s → 5s

Version 48.0

“

Corvus’ early game is too powerful for the full map coverage that it provides, so his placement cost is increasing and Spirit Pierce is being reduced as he has many spell options for covering pierce in the later game to make up for this. Frostbound & Repel can chain together for a powerful stall so Frostbound’s duration is being reduced.
— Update notes

”

Levels	Changes
All	Placement cost increased ― $1,025 → $1,325
1	Spirit: Pierce reduced ― 5 → 4
2+	Spirit: Pierce reduced ― 8 → 6

Spell	Changes
Frostbound	Duration reduced ― 10s → 8s

Version 49.0

“

As Corvus is vastly outperforming other heroes his high-end performance is being nerfed in several ways but with an effort made to also improve his lower-end performance at the same time. Mana generation’s maximum potential scaling has been targeted as a part of this since it is too easy to maintain high levels of mana, but his passive mana regeneration and low-mana bonuses have also been improved so he also doesn’t run out to 0 too easily. Along with this other improvements should make him easier to use in general. There is a lot changing here, so we have broken it down into further sections
— Update notes

”

Levels	Changes
1+	Spells can now be de-activated between rounds Passive Mana gain per second increased ― 1 → 2 Haunt: Mana per layer reduced ― 3 → 2
7+	Spirit Walk: Now allows teleporting onto ice platforms (undocumented)
8+	Spiritual Balance: Threshold for the maximum Mana gain reduced ― 200 Mana → 80 Mana Spiritual Balance: Threshold for the minimum Mana gain reduced ― 520 Mana → 280 Mana Spiritual Balance: Maximum Mana multiplier increased ― 2× → 3×
9–13	Spirit: Damage reduced ― 5 → 4 Note: Damage at Level 14 remains 10.
10+	Dark Ritual: Duration reduced ― 12s → 10s
11+	Soul Harvest: Damage reduced ― 35 → 30 Soul Harvest: Bonus damage to Ceramic Bloons reduced ― +35 → +10

Spell	Changes
Spear	Explosion delay increased ― 0.15s → 0.3s Levels 1–11: Projectile pierce reduced ― 10 → 5 Note: Pierce at levels 12+ remains 10
Frostbound	Mana cost increased ― 190 Mana → 220 Mana Duration increased ― 8s → 10s Cooldown increased ― 50s → 60s Levels 9+: MOAB-Class Bloons now consume +4 pierce
Ancestral Might	Level 20: Damage reduced ― 300 → 270
Storm	Mana consumption per second reduced ― 15 Mana → 12 Mana
Overload	Can now receive camo detection from external sources Levels 13–19: Damage reduced ― 1150 → 700 Level 20: Damage reduced ― 2250 → 1400

Version 51.0

Levels	Changes
11+	Aggression spell should now work correctly with Spiritual Attunement (bug fix)

Version 55.0

Levels	Changes
1+	Resolved an issue where Camo detection was not affecting the Repel Spell (bug fix)

Cosmetic items

Item	Category	Unlock method(s)	Introduced
Corvus Owl Pet	Heroes — Pets	Trophy Store — 120, Pets Fan Pack (IAP)	Version 42.0

Gallery

Screenshots

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Corvus's Tower Panel Inventory at Level 3

Assets

Spiritless
Levels 1–2
Levels 3–6
Levels 7–9
Levels 10–14
Levels 15–19
Level 20
Round icon
Square icon
Soul Harvest icon
Spirit Walk icon
Dark Ritual icon
Spellbook icon

Spell icons

Spear icon
Nourishment icon
Repel icon
Echo icon
Haste icon
Soul Barrier icon
Trample icon
Frostbound icon
Aggression icon
Vision icon
Ember icon
Ancestral Might icon
Malevolence icon
Storm icon
Recovery icon
Overload icon

Voice lines

When selected in the Heroes menu

"This book hungers."

When placed

"I walk with the spirits."
"The spirits awaken."

When selected

"Yes?"
"What is it?"
"The spirit obeys."
"Tsk, tsk, tsk..."
"Are we hunting?"
"Hmmmm..."

When selected repeatedly

"That could make me angry."
"Everyone has something to lose."

When opening the Spellbook

"This book hungers."
"Ah, you seek these secrets?"

When activating Soul Harvest

"Time to harvest!"
"You are mine!"

When activating Spirit Walk

"Elsewhere!"
"Spirits, guide me!"

When activating Dark Ritual

"The ritual begins."
"Use what we have taken!"

When leveling up

"That will do."
"Satisfactory."
"Ah, yes!"
"There is yet more..."
"The spirits still hunger."
"Fly, spirits, fly!"
"Fly, spirits, we are free!"
*evil laughter*

When leveling up to level 20

"Ah, the final inscription!"

When a MOAB appears

"MOAB! Take it down!"

When a BFB appears

"So garish! Consume it."

When a ZOMG appears

"A pleasing aesthetic, but it must be destroyed."

When a DDT appears

"Danger! DDT!"

When a BAD appears

"BAD! Focus your power!"

When a MOAB-Class Bloon is destroyed

"Tell them Corvus sends his regards."
"The spirits claim all!"

When a Bloon leaks

"Be not afraid... Be angry."
"The spirits are not satisfied."

Trivia

Corvus's passive mana gain is referred to as SpiritualWill internally.

In other languages

Name
Language	Text	Notes
Arabic	كورفاس	—
Danish	Corvus	—
German	Corvus	—
Spanish	Corvus	—
Spanish (Latin America)	Corvus	—
Finnish	Corvus	—
French	Corvus	—
Italian	Corvus	—
Japanese	コルヴァス	—
Korean	코르부스	—
Dutch	Corvus	—
Norwegian	Corvus	—
Polish	Corvus	—
Portuguese (Brazil)	Corvus	—
Russian	Корвус	—
Swedish	Corvus	—
Thai	คอร์วุส	—
Turkish	Corvus	—
Chinese (simplified)	科沃斯	—
Chinese (traditional)	科沃斯	—

Description
Language	Text	Notes
Arabic	يجيد "كورفاس" العمل على الجبهة، مما يعمل على إضعاف البالونات القريبة لحصد المانا وتوجيه الطاقات القوية من خلال رفيقه الروحي.	—
Danish	Corvus er suveræn på fronten, hvor han svækker bloons og høster mana og kanaliserer kraftfulde energier igennem sin ånd-ledsager.	—
German	Corvus ist in der vorderen Linie sehr effektiv. Er schwächt Bloons in seiner Nähe, um Mana zu ernten, das er durch seinen Geisterbegleiter zu starken Energien kanalisiert.	—
Spanish	Corvus funciona bien en primera línea y debilita a los bloons cercanos para obtener maná y canalizar energías poderosas a través de su compañero, el Espíritu.	—
Spanish (Latin America)	Corvus funciona bien en la primera línea: debilita a los bloons cercanos para obtener maná y canalizar energías potentes mediante su compañero espiritual.	—
Finnish	Corvus toimii hyvin etulinjassa heikentämällä läheisiä blooneja, jotta voi kerätä manaa ja kanavoida voimakkaita energioita henkikumppaninsa kautta.	—
French	Corvus est idéal à placer en première ligne, car il peut affaiblir les Bloons autour de lui et recueillir leur mana pour canaliser de puissantes énergies à travers son compagnon spirituel.	—
Italian	Corvus è particolarmente efficace in prima linea, perché indebolisce i bloon vicini per raccogliere mana e incanalare potenti energie attraverso lo Spirito accompagnatore.	—
Japanese	コルヴァスは前線で活躍し、近くのブルーンを弱体化させてマナを採取し、精霊コンパニオンを通して強力なエネルギーを流す。	—
Korean	코르부스는 주변의 풍선을 약화하며 마나를 수확하고 영체 동반자를 통해 강력한 기운을 운용하므로, 전방에 배치하면 좋습니다.	—
Dutch	Corvus doet het goed aan het front door nabije Bloons te verzwakken, mana te verzamelen en via zijn geestelijke metgezel krachtige energie te kanaliseren.	—
Norwegian	Corvus jobber godt på frontlinjen, der han svekker bloons i nærheten for å høste inn mana og kanalisere kraftige energier via åndekompanjongen sin.	—
Polish	Corvus doskonale radzi sobie na linii frontu, osłabiając pobliskie blony, zbierając Manę i kanalizując potężne moce dzięki swemu towarzyszowi, Duchowi.	—
Portuguese (Brazil)	Corvus funciona bem na linha de frente, enfraquecendo Bloons próximos para coletar mana e canalizar poderosas energias através do seu companheiro Espírito.	—
Russian	Корвус хорошо работает на передовой: он ослабляет ближайшие шары, собирает ману и направляет мощную энергию через призрачного спутника.	—
Swedish	Corvus fungerar bra i frontlinjen och försvagar närliggande Bloons för att skörda Mana och kanalisera kraftfulla energier genom sin Andekompanjon.	—
Thai	คอร์วุสทำหน้าที่ได้ดีเมื่ออยู่แนวหน้า ทำให้บลูนใกล้ๆ อ่อนแอลงเพื่อเก็บเกี่ยวมานาและใช้พลังงานทรงอานุภาพผ่านคู่หูวิญญาณ	—
Turkish	Corvus, Mana biçip toplamak ve güçlü enerjileri Spirit yoldaşı aracılığıyla yönlendirmek için yakındaki Bloon'ları zayıflatarak ön cephede iyi bir iş çıkarır.	—
Chinese (simplified)	科沃斯能在前线发挥出色的作用，削弱附近的气球收集法力，并通过他的随行精灵引导强大的能量。	—
Chinese (traditional)	科沃斯適合在前線迎敵，他能夠用收割魔力的方式削弱周圍的氣球，並經由其精靈夥伴引導強大能量。	—

Heroes in Bloons TD 6

Heroes	Quincy (Stats • Strategy) • Gwendolin (Stats • Strategy) • Striker Jones (Stats • Strategy) • Obyn Greenfoot (Stats • Strategy) • Captain Churchill (Stats • Strategy) • Benjamin (Strategy) • Ezili (Stats • Strategy) • Pat Fusty (Stats • Strategy) • Adora (Stats • Strategy) • Admiral Brickell (Stats • Strategy) • Etienne (Stats • Strategy) • Sauda (Stats • Strategy) • Psi (Stats • Strategy) • Geraldo (Stats • Strategy) • Corvus (Stats • Strategy) • Rosalia (Stats • Strategy) • Silas (Stats • Strategy) • Dan D'Monke (Stats • Strategy)
Skins	Cyber Quincy • Wolfpack Quincy • Fēijiāngjūn Quincy* • Scientist Gwendolin • Harlegwen • Firecracker Gwen • Biker Bones • Octojones • Ocean Guardian • Mountain Guardian • Skeletor • Sentai Churchill • Sleigh Churchill • Benjammin DJ • Sushi Bento • Smudge Catt • Galaxili • Fusty the Snowman • Kaiju Pat • Joan of Arc Adora • Voidora • She-Ra • Qīngshé Adora* • Dread Pirate Brickell • Lifeguard Brickell • ETn • Book Wyrm • Viking Sauda • Jiangshi Sauda • Red Sauda • Māonǚ Sauda* • Psimbals • Dreamstate Psi • Qīnglóng Xiūshì Língjī* • Gentlemonkey Gadgeteer • Tinkerfairy • Mǎnián Silas* • Prince Adam
Knowledge	Heroic Reach • More 'Splody • Ability Discipline • Heroic Velocity • Scholarships • Quick Hands • Self Taught Heroes • Ability Mastery • Hero Favors • Empowered Heroes • Big Bloon Blueprints • Monkeys Together Strong • Weak Point

* = Exclusive to the Chinese version

Towers in Bloons TD 6

Primary	Dart Monkey • Boomerang Monkey • Bomb Shooter • Tack Shooter • Ice Monkey • Glue Gunner • Desperado
Military	Sniper Monkey • Monkey Sub • Monkey Buccaneer • Monkey Ace • Heli Pilot • Mortar Monkey • Dartling Gunner
Magic	Wizard Monkey • Super Monkey • Ninja Monkey • Alchemist • Druid • Mermonkey
Support	Banana Farm • Spike Factory • Monkey Village • Engineer Monkey • Beast Handler
Heroes	Quincy • Gwendolin • Striker Jones • Obyn Greenfoot • Captain Churchill • Benjamin • Ezili • Pat Fusty • Adora • Admiral Brickell • Etienne • Sauda • Psi • Geraldo • Corvus • Rosalia • Silas • Dan D'Monke • Sheriff^{[Frontier Legends exclusive]}
Items	Battle Cat! • Banana Farmer (Banana Farmer Pro) • Cave Monkey • Dungeon Statue • Energizing Totem • Hype Boost Monkey • Myrkul • Pontoon • Portable Lake • Super Monkey Beacon • Tech Bot (Tech Bot Prime)