Sleeper

Summary
Sleeper is a S tier tower obtained in the Premium summon. It is known as one of the best supporting towers in the game.

Sleeper is very unique due to its ability to stun upon critically hitting an enemy. Due to this ability, it is often paired with an Exotic Crit relic. Since it can fill a very good general support role, it is viable in essentially every deck that is run.

Sleeper is considered an early-game to end-game troop.