When Knowledge Vault leaves play, put all cards removed from the game with Knowledge Vault into their owner's graveyard at end of turn. , Remove the top card of your library from the game face down. Sacrifice Knowledge Vault: Discard your hand, then put all cards removed from the game with Knowledge Vault into their owner's hand.
, 
Remove the top card of your library from the game face down. Sacrifice Knowledge Vault: Discard your hand, then put all cards removed from the game with Knowledge Vault into their owner's hand. 