Underground River [The Brothers' War] Legendary Artifact Creature — Legendary Artifact Creature You can't cast Good Knight

You can't cast Good Knight if you're on the Phyrexian team

If Incubation Druid has a +1/+1 counter on it

Set: Jumpstart 2022 Type: Legendary Creature — Goblin Warrior Rarity: Rare Cost: {2}{R}{R} {T}: Create X 1/1 red Goblin creature tokens

Set: Multiverse Legends Type: Legendary Creature — Zombie Warrior Rarity: Mythic Cost: {3}{U}{B} Grimgrin

Underground River [The Brothers' War] Legendary Artifact Creature — Legendary Artifact Creature You can't cast Good KnightSet: The Brothers' War Type: Land Rarity: Rare {T}: Add {C}. {T}: Add {U} or {B}. Underground River deals 1 damage to you. The war polluted the land, turning what had once been fruitful fields into fetid morasses of mud and rusted corpses. The Antiquities War