Knowledge Vault [Legends] Zendikar Promos "Blood is constant

"Blood is constant

Set: Kaladesh Prerelease Promos Type: Artifact Rarity: Rare Cost: {4} Whenever you cast a spell

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

When the monster is destroyed

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

Knowledge Vault [Legends] Zendikar Promos "Blood is constantSet: 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.