Knowledge Vault [Legends] BW99 You may reveal a creature

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

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

Metal Rarity: Ultra Rare Retreat cost: Colorless

you gain life equal to the life lost this way

Set: Anthologies Type: Land Rarity: Rare {T}: Add {C}

Knowledge Vault [Legends] BW99 You may reveal a creatureSet: 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.