{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.
Near Mint - $35.500
Lightly Played - $28.400
Moderately Played - $24.900
Heavily Played - $21.300
Damaged - $17.800
Near Mint Spanish - $35.500
Lightly Played Spanish - $28.400
Moderately Played Spanish - $24.900
Heavily Played Spanish - $21.300
Damaged Spanish - $17.800