Kasharin Beholder

Flying. Ward 1. Cannot be tapped.
Charm--{u}{w/u}{w}: Until end of turn, gain control of target nonartifact nonblack creature whose mana
cost is equal or less to Kasharin Beholder's power.
Rot--{b}{u/b}{u}: Target non-artifact creature gets a
rot counter, then gets -1/-1 for each rot counter
on it. For the next X end steps, add one rot
counter onto that creature, where X is this
creature's power.