name: Gravelgill Duo
originalText: Whenever you play a blue spell, Gravelgill Duo gets +1/+1 until end of turn.\nWhenever you play a black spell, Gravelgill Duo gains fear until end of turn.
printings: SHM
text: Whenever you cast a blue spell, this creature gets +1/+1 until end of turn.\nWhenever 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.)
type: Creature — Merfolk Rogue Warrior