The Master of Keys (Borderless) [Duskmourn: House of Horror Commander] Urza (S is mana from a

(S is mana from a snow source

and appeals to both families and experienced gamers

Set: Commander Masters Type: Enchantment Rarity: Rare Cost: {4} Whenever you cast a colorless creature spell

there is an additional untap step

The Master of Keys (Borderless) [Duskmourn: House of Horror Commander] Urza (S is mana from aSet: Duskmourn: House of Horror Commander Type: Legendary Enchantment Creature Horror Rarity: Mythic Cost: {X}{W}{U}{B} Flying When The Master of Keys enters, put X +1 +1 counters on it and mill twice X cards. Each enchantment card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.)