Rabid Scavenger

Possessed (As long as this creature has a +1/+1
counter on it, it has menace, attacks each combat if
able, and is a demon in addition to its other types.)
Morbid — At the beginning of each end step, if
a creature died this turn, untap Rabid Scavenger.
{t}, Exile target creature card from a graveyard:
Put a +1/+1 counter on Rabid Scavenger.