The Wizard is slow but steady with its scaling, having guaranteed scaling but no way to speed it up. Early on, it will be very vulnerable to aggression from Aggro and fast-paced Tempo, doing next to nothing against swarms or very early high-HP targets.
Like many scaling Monkeys, Wizard is extra vulnerable to removals and is poor when drawn late. Return to Sender is its biggest weakness. OTK decks and 0-delay Bloons also bypass Wizards.
If the Wizard is placed early, the Wizard will need two turns (one on Game Night) before it becomes immune to Bed Time, unless weakened by other sources (e.g. Weakening Gas Bloon, Buddy Bloon).
In the absence of removal cards, Wizard is a safe candidate for Try this!, guaranteeing extra damage per round especially if it is placed for a long time, compared to Spike-o-Pult which has one whole round of downtime but better synergy with Try This.
Being an Uncommon, it's fairly easy to unlock, making it popular among newer players.
Data for the Wizard Monkey existed in the Firstlook test before it was introduced in the Full Playable test. It was originally named "Apprentice Monkey".