Grendel, Crude Musician

Intimidate, Haste
Whenever a creature enters a graveyard from
anywhere on your turn, put a +1/+1 counter on Grendel, Crude Musician.
Whenever Grendel, Crude Musician attacks, you
may pay {b/g}{b/g}. If you do, return target creature
from your graveyard with power X or less onto
the battlefield tapped and attacking, where X is Grendel, Crude Musician's Power.