Mjolnir, Storm Hammer (Foil Etched) [Assassin's Creed] SV5 The key did not work

The key did not work on a single lock

20 | Put a creature card from any graveyard onto the battlefield under your control

Set: Kamigawa: Neon Dynasty Promos Type: Legendary Land Rarity: Rare {T}: Add {G}

Set: Murders at Karlov Manor Type: Legendary Creature — Elf Ooze Wizard Rarity: Mythic Cost: {2}{G}{U} At the beginning of combat on your turn

Mjolnir, Storm Hammer (Foil Etched) [Assassin's Creed] SV5 The key did not workSet: Assassin's Creed Type: Legendary Artifact Equipment Rarity: Rare Cost: {4} When Mjlnir enters the battlefield, attach it to target legendary creature you control. Whenever equipped creature attacks, tap target creature defending player controls and put a stun counter on it. Then Mjlnir deals damage to each opponent equal to the number of tapped creatures that opponent controls. Equip {4}