Polluted Scavenger

Flying
When Polluted Scavenger enters the battlefield,
if it escaped, exile up two target cards from a graveyard. Put a +1/+1 counter on Polluted
Scavenger for each creature card exiled this way.
Escape—{b}{b}, Exile three other cards from your graveyard. (You may cast this card from your
graveyard for its escape cost.)