Knowledge Vault [Legends] Hour of Devastation where X is the greatest

where X is the greatest power among creatures you control

Set: Legends Type: Creature — Demon Rarity: Rare Cost: {3}{B}{B} At end of combat

Set: Legends Type: World Enchantment Rarity: Rare Cost: {2}{R}{R} No more than two creatures can attack each combat

Squirrel creatures get +1/+1

Knowledge Vault [Legends] Hour of Devastation where X is the greatestSet: Legends Type: Artifact Rarity: Rare Cost: {4} {2}, {T}: Exile the top card of your library face down. {0}: Sacrifice Knowledge Vault. If you do, discard your hand, then put all cards exiled with Knowledge Vault into their owner's hand. When Knowledge Vault leaves the battlefield, put all cards exiled with Knowledge Vault into their owner's graveyard.