Ebus, The Eradicator

Whenever a creature leaves the battlefield, you put a +1/+1 counter on target creature you control.
{x}{g/w}{b/g}: Exile X target nonland permanents. Return them to the battlefield at the beginning of the next end step.
{1}{b/g}{w/b}: Exile target creature an opponent controls, then proliferate. This can only be used once per turn.