Whenever you play a blue spell, Gravelgill Duoo gets +1/+1 until end of turn. Whenever you play a black spell, Gravelgill Duo gains fear until end of turn.

• Number: 165
• Rarity: C
• Power: 2
• Toughness: 1
• Type: Creature
• Subtype: Merfolk Rogue Warrior
• Mana cost: 2(1xU/B)
• Color: Hybrid
• Artist: Brandon Kitkouski