Camo Regrow Rainbows as a card is an alternative to the normal Rainbow Bloon, with more emphasis put on its Camo, Regrow, and general cheapness rather than high health. If combined with a crowd of high-health Bloons, Camp Regrow Rainbows can be dangerous, however they have much less health than most Bloons at their cost range.
More often, Camo Regrow Rainbows are used in CRRROD with similar tactics to the individual Camo Regrow Rainbow cards.
Camo Regrow Rainbow Bloon is best in decks with some amounts of gold gain, such as in a deck with Banana Farm. Using both charges is important, as if you are not making much money, Camo Regrow Ceramic Bloon can get you a better Bloon for only one more Gold.
A Banana Farm allows you to play both charges in one turn, or to use a Bloon like MOAB with one Camo Regrow Rainbow. Using this can allow you to put on more pressure faster.
Camo Regrow Rainbow Bloon was again just still too expensive. Its cost has been decreased from 7 to 6 to not do anything to Camo Regrow Rainbow Rush of Death, while also making the card itself a little easier to run. Its low cost now makes it a lot easier for tempo to run this as a kind of sticky "can't really deal with this" kind of Bloon, so I'd encourage trying it with other Camo Bloons,[sic] like Golden Blimp, Soulstealer, BFB, and the new ZOMG. — u/No-Appearance1780's commentary, 20:33–20:57 (with most disfluencies removed)
This card originally had 1 charge and 200 health, but it was changed to 2 charges and 225 health before the update released, the former change being due to feedback from community playtesters.[1] The original charge and health amounts were displayed in the update video.[2]
In the Version 6.2 playtests, Camo Regrow Rainbow Bloons were buffed on the consideration that CRRROD is a strong card but the Camo Regrow Rainbow card itself is underpowered.[3] The rationale for lowering its Gold cost from 8 to 7 was to limit the equipped card's issue as a major "money sink", according to community playtesters.[3]
Version 6.4 further decreased cost of Camo Regrow Rainbow Bloon so the card itself fulfills a better role as a "sticky" card, in that it's difficult to remove in combination with conventional high-health Tempo cards.[4]