Heartless Conscription (OTC) from Outlaws of Thunder Junction Commander, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Eli Minaya
• Card Text:
  Exile all creatures. For each card exiled this way, you may play that card for as long as it remains exiled, and mana of any type can be spent to cast that spell. Exile Heartless Conscription.