Alchemist (BTD7)

The Alchemist is a returning tower in Bloons Tower Defense 7 that throws acid potions over walls and solid obstacles that deal damage over time. With upgrades on the top path, it can become a lethal support tower. Its ability transforms itself into a powerful attack monster for 10 seconds. Tier 5 takes this ability so it transforms 4 other nearby towers for 10 seconds. Tier 6 turns every tower on screen that is Tier 3 or below into an attack monster for 20 seconds. The other Tier 6 upgrades add a permanent boost to nearby tower statistics or a powerful new attack that can turn even very powerful MOAB-Class Bloons into Red Bloons.