Riverchurn Monument [Aetherdrift] Nastiest You can't cast Bad Knight

You can't cast Bad Knight if you're on the Mirran team

Set: Murders at Karlov Manor Commander Type: Creature — Bird Soldier Rarity: Rare Cost: {3}{W}{W} Flying

Set: Commander 2013 Type: Legendary Creature — Bird Wizard Rarity: Mythic Cost: {G}{W}{U} Flying

(This token's mana cost is {2}{U}{U}

000 Type: Creature — Astartes Warrior Rarity: Rare Cost: {4}{B} When Primaris Eliminator enters the battlefield

Riverchurn Monument [Aetherdrift] Nastiest You can't cast Bad KnightSet: Aetherdrift Type: Artifact Rarity: Rare Cost: {1}{U} {1}, {T}: Any number of target players each mill two cards. (Each of them puts the top two cards of their library into their graveyard.) Exhaust {2}{U}{U}, {T}: Any number of target players each mill cards equal to the number of cards in their graveyard. (Activate each exhaust ability only once.)