Living Death [Mystery Booster] Jellyfish and their masters

and their masters

Set: Ikoria: Lair of Behemoths Promos Type: Legendary Creature — Dinosaur Cat Nightmare Rarity: Mythic Cost: {1}{R}{W}{B} Mutate {2}{B/R}{W}{W} (If you cast this spell for its mutate cost

{2}{U}{U}: Return Arcanis the Omnipotent to its owner's hand

and in his name I will rend you to nothing but spores on the wind

Set: Secret Lair Drop Promos Type: Creature — Sliver Rarity: Rare Cost: {2}{G} All Sliver creatures have trample

Living Death [Mystery Booster] Jellyfish and their mastersSet: Mystery Booster Type: Sorcery Rarity: Rare Cost: {3}{B}{B} Each player exiles all creature cards from their graveyard, then sacrifices all creatures they control, then puts all cards they exiled this way onto the battlefield.