Animate Dead [Limited Edition Alpha] Happy Holidays sacrifice Contamination unless you sacrifice

sacrifice Contamination unless you sacrifice a creature

{2}{G}: Another target creature gets +2/+0 and gains trample until end of turn

Set: Rivals of Ixalan Promos Type: Creature — Dinosaur Mythic Cost: {6}{G}{G} Enrage — Whenever Polyraptor is dealt damage

Set: Modern Masters Type: Legendary Creature — Dragon Spirit Rarity: Mythic Cost: {4}{B}{B} Flying

They can't be regenerated

Animate Dead [Limited Edition Alpha] Happy Holidays sacrifice Contamination unless you sacrificeSet: Limited Edition Alpha Type: Enchantment Aura Uncommon Cost: {1}{B} Enchant creature card in a graveyard When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that