Creature
– Merfolk Rogue Warrior
2 / 1
(
3)
Whenever you cast a blue spell, Gravelgill Duo gets +1/+1 until end of turn.
Whenever you cast a black spell, Gravelgill Duo gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)
Color Identity:
B,U,Black,Blue