Conclave Tribunal [March of the Machine Commander]

Set: March of the Machine Commander Type: Enchantment Rarity: Uncommon Cost: {3}{W} Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) When Conclave Tribunal enters the battlefield, exile target nonland permanent an opponent controls until Conclave Tribunal leaves the battlefield.