
Whenever you cast a blue spell, this creature gets +1/+1 until end of turn.
Whenever you cast a black spell, this creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)
Gravelgill Duo has 1 printing, first in Shadowmoor (2008). EDHREC ranks it #30,232 among Commander cards. It has 1 official ruling.
Cards that show up in the same decks on EDHREC.