Cannibalizing Monstrosity

Trample
Whenever a creature enters the battlefield
under your control you may sacrifice it. If you do,
put two +1/1 counters on Cannibalizing Monstrosity, lose 2 life, and draw a card.
Otherwise, sacrifice Cannibalizing Monstrosity
and lose 2 life.
What chance do we have, when that's
what it does to its own?