Shriekmaw [Lorwyn Promos] Zombie Merfolk "The Knowledge Pool knows

"The Knowledge Pool knows

Reverse Type: Sorcery Create a 4/4 red and green Beast creature token with trample

Set: Eldritch Moon Prerelease Promos Type: Legendary Creature — Eldrazi Rarity: Mythic Cost: {13} This spell costs {1} less to cast for each card type among cards in your graveyard

"Woven together

Shriekmaw [Lorwyn Promos] Zombie Merfolk "The Knowledge Pool knowsSet: Lorwyn Promos Type: Creature Elemental Rarity: Rare Cost: {4}{B} Fear (This creature can't be blocked except by artifact creatures and or black creatures.) When Shriekmaw enters the battlefield, destroy target nonartifact, nonblack creature. Evoke {1}{B} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)