Dr. Nusakan, Mystic Clinic

When it enters, you may put a -1/-1 counter on each other creature you control.

At the end of the turn, you may remove a -1/-1 counter from permanent that you control, if do it choose:
•Draw a card or gain 5 life.
•Destroy a target creature or target artifact.
•Exile target creature you control, then return it to the battlefield under its owner's control.

I will find the cure for all diseases...