Knowledge Vault [Legends] Forest Set: Amonkhet Invocations Type: Instant

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {3}{U}{U} Return all lands to their owners' hands

and that player can't activate abilities that aren't mana abilities

Set: Amonkhet Prerelease Promos Type: Creature — Human Warrior Rarity: Mythic Cost: {2}{R} If Combat Celebrant hasn't been exerted this turn

you may play that card without paying its mana cost

Knowledge Vault [Legends] Forest Set: Amonkhet Invocations 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.