Knowledge Vault [Legends] Planar Chaos Set: Dominaria Prerelease Promos Type:

Set: Dominaria Prerelease Promos Type: Legendary Creature — Human Artificer Rarity: Mythic Cost: {2}{U}{R} Whenever you cast a historic spell

Each player creates a 1/1 black Rat creature token for each 1 life they paid this way

"Did it have this shape upon Mirrodin's creation

At the beginning of the chosen player's upkeep

Knowledge Vault [Legends] Planar Chaos Set: Dominaria Prerelease Promos Type:Set: 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.