Knowledge Vault [Legends] Zendikar Promos you may reveal this card

you may reveal this card from your hand and pay its splice cost

This card cannot be destroyed by battle with a DARK monster

Set: Turbo Pack: Booster Four Card type: Normal Trap Rarity: Ultra Rare Attack: 0 Defense: 0 Activate only if there is a face-up "X-Saber" monster(s) on the field

Set: EX: Emerald Type: Colorless Rarity: Common Retreat cost: Colorless

Knowledge Vault [Legends] Zendikar Promos you may reveal this cardSet: 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.