Fengrel, The Hellhound

Double strike

Whenever another creature dies, you may pay {2}.
If you do Fengrel, the Hellhound gains all
abilities of that creature until that creature leaves
the graveyard.

Escape {2}{r/w}{r/w}, Return a creature an opponent
owns from their graveyard to the battlefield. (You
may cast this card from your graveyard for its
escape cost.)