Name: Gravelgill Duo
Type: Creature — Merfolk Rogue Warrior
Rules Text: 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.)
Set/Rarity: Shadowmoor Common