Knowledge Vault [Legends] SWSH102 Destroy this card during your

Destroy this card during your opponent's next End Phase after activation

Enchanted creature gets +2/+1

For a Synchro Summon

you can destroy 1 face-up card your opponent control

When Illusions of Grandeur enters the battlefield

Knowledge Vault [Legends] SWSH102 Destroy this card during yourSet: 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.