Smokestack [Urza's Saga] Commander 2013 Set: Mirage Type: World Enchantment

Set: Mirage Type: World Enchantment Rarity: Rare Cost: {1}{G}{G} At the beginning of each player's upkeep

Set: Amonkhet Prerelease Promos Type: Legendary Artifact Rarity: Rare Cost: {2} At the beginning of your end step

sacrifice two untapped lands instead

Set: Antiquities Type: Creature — Phyrexian Demon Rarity: Rare Cost: {4}{B}{B} Flying (This creature can't be blocked except by creatures with flying or reach

Smokestack [Urza's Saga] Commander 2013 Set: Mirage Type: World EnchantmentSet: Urza's Saga Type: Artifact Rarity: Rare Cost: {4} At the beginning of your upkeep, you may put a soot counter on Smokestack. At the beginning of each player's upkeep, that player sacrifices a permanent for each soot counter on Smokestack.