Knowledge Vault [Legends] Forest Plains The Arbiter is a conduit

The Arbiter is a conduit of justice

Set: San Diego Comic-Con 2014 Type: Legendary Planeswalker — Ajani Mythic Cost: {3}{W} +1: Until end of turn

Set: Friday Night Magic 2000 Type: Sorcery Rare Cost: {2}{R} Destroy target land

−7: Destroy all non-Zombie creatures

Mines became common as cities during the days of the artificers

Knowledge Vault [Legends] Forest Plains The Arbiter is a conduitSet: 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.