Arcane Mastery is the third upgrade of Path 1 for the Wizard Monkey in BTD6. It allows the Wizard to shoot twice as fast as the base tower with adding a substantial range boost. Its magic bolts also pops three layers instead of two, despite the description not mentioning that added bonus. It also increases the tower's pierce by +4 (as of version 2.0). It costs $TBA on Easy, $1300 on Medium, $TBA on Hard, $TBA on Impoppable.
Invest in a 3-0-2 wizard monkey over a 3-2-0 wizard monkey, as the bolt possess poor pierce, and the succeeding upgrade Arcane Spike allows the popping of lead bloons, leaving the fireball attack near redundant and the benefits of intense magic more important.