Urza, Chief Artificer (Extended Art) [The Brothers' War Commander] Frog Horror Set: March of the Machine

Set: March of the Machine Commander Type: Enchantment Rarity: Rare Cost: {4}{R} Nontoken creatures you control have riot

(They're from the chosen plane if it's clear beyond doubt from the name

Set: Modern Horizons 3 Commander Type: Land Rarity: Rare T: Add C

Untap those creatures

Set: Outlaws of Thunder Junction: The Big Score Type: Creature — Spirit Rarity: Mythic Cost: {3}{B}{B} Menace

Urza, Chief Artificer (Extended Art) [The Brothers' War Commander] Frog Horror Set: March of the MachineSet: The Brothers' War Commander Type: Legendary Creature Human Artificer Rarity: Mythic Cost: {3}{W}{U}{B} Affinity for artifact creatures (This spell costs {1} less to cast for each artifact creature you control.) Artifact creatures you control have menace. At the beginning of your end step, create a 0 0 colorless Construct artifact creature token with "This creature gets +1 +1 for each artifact you control."