Knowledge Vault [Legends] BW99 "I did offer them a

"I did offer them a choice

Set: Black & White: Plasma Freeze Type: Supporter Rarity: Ultra Rare

You may reveal a creature card from among them and put it into your hand

Set: Magic Player Rewards 2009 Type: Instant Rarity: Rare Cost: {1}{U}{U}{U} Choose two —

Knowledge Vault [Legends] BW99 "I did offer them aSet: 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.