Knowledge Vault [Legends] Human Druid Set: Iconic Masters Type: Instant

Set: Iconic Masters Type: Instant Rarity: Mythic Cost: {U}{U} Counter target spell

you may pay {1} any time you could cast an instant

Set: Beta Edition Type: Enchantment — Aura Rarity: Rare Cost: {B}{B} Enchant artifact

Whenever a creature enters the battlefield under an opponent's control

Wei Field Marshal's power is equal to the number of Swamps you control

Knowledge Vault [Legends] Human Druid Set: Iconic Masters Type: InstantSet: 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.