Knowledge Vault [Legends] Forest Plains Does them some good if

Does them some good if we smash every one so often

Set: Antiquities Type: Artifact Creature — Construct Rare Cost: {6} Flying Tetravus enters the battlefield with three +1/+1 counters on it

Set: Kaladesh Inventions Type: Artifact Creature — Shapeshifter Mythic Cost: {6} Imprint — When Duplicant enters the battlefield

−7: Destroy all non-Zombie creatures

Knowledge Vault [Legends] Forest Plains Does them some good ifSet: Legends Type: Artifact 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.