Staff of Eden, Vault's Key [Assassin's Creed] Tempest Whenever one or more players

Whenever one or more players sactificer one or more creatures

"Did it have this shape upon Mirrodin's creation

Set: The List Type: Legendary Creature — Elder Dinosaur Rarity: Rare Cost: {10}{G}{G} This spell costs {X} less to cast

Put a counter of that kind on Crystalline Giant

Staff of Eden, Vault's Key [Assassin's Creed] Tempest Whenever one or more playersSet: Assassin's Creed Type: Legendary Artifact Rarity: Mythic Cost: {6} When Staff of Eden, Vault's Key enters the battlefield, put target legendary permanent card not named Staff of Eden, Vault's Key from a graveyard onto the battlefield under your control. {T}: Draw a card for each permanent you control but don't own.