Archfiend of the Dross (Borderless Ichor Step-and-Compleat Foil) [Phyrexia: All Will Be One] Kaya Set: March of the Machine:

Set: March of the Machine: The Aftermath Type: Enchantment Rarity: Rare Cost: {1}{W} As Deification enters the battlefield

Or just look up a calculator online

Reveal cards from the top of your library until you reveal X land cards

and it's returned from the battlefield to its owner's hand at the beginning of the next end step

Archfiend of the Dross (Borderless Ichor Step-and-Compleat Foil) [Phyrexia: All Will Be One] Kaya Set: March of the Machine:Set: Phyrexia: All Will Be One Type: Creature Phyrexian Demon Rarity: Rare Cost: {2}{B}{B} Flying Archfiend of the Dross enters the battlefield with four oil counters on it. At the beginning of your upkeep, remove an oil counter from Archfiend of the Dross. Then if it has no oil counters on it, you lose the game. Whenever a creature an opponent controls dies, its controller loses 2 life.