Illusion of Depletion

At the beginning of each end step, if you've
gained 5 or more life this turn put a +1/+1
counter on Illusion of Depletion. Otherwise
put a -1/-1 counter on each creature you
control.
When Illusion of Depletion becomes the target
of a spell or ability, sacrifice it unless you pay
5 life and discard a card