Knowledge Vault [Legends] Siege // Artifact I will still claim it

I will still claim it for Keld

Sacrifice the creature when you lose control of Seraph

if you or a player you're attacking has the initiative

Set: Commander Masters Type: Artifact Rarity: Common Cost: {3} T: Add C

Set: Legends Type: Creature — Illusion Rarity: Rare Cost: {4}{U} {T}: Psionic Entity deals 2 damage to any target and 3 damage to itself

Knowledge Vault [Legends] Siege // Artifact I will still claim itSet: 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.