Steam Vents (Borderless) (Galaxy Foil) [Unfinity] Commander 2017 the brothers had known that

the brothers had known that no human contrivance could stand against the true masters of Dominia

that player sacrifices a permanent for each soot counter on Smokestack

Sacrifice an artifact: Return target artifact card with mana value 3 or less from your graveyard to the battlefield

Set: Urza's Destiny Type: Enchantment Rarity: Rare Cost: {2}{W}{W} Each other non-Aura enchantment is a creature in addition to its other types and has base power and base toughness each equal to its converted mana cost

If it's a permanent card

Steam Vents (Borderless) (Galaxy Foil) [Unfinity] Commander 2017 the brothers had known thatSet: Unfinity Type: Land Island Mountain Rarity: Rare ({T}: Add {U} or {R}.) As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.