From Under the Floorboards (SOI) from Shadows over Innistrad, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Steven Belledin
• Card Text:
  Madness XBB (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
  Put three 2/2 black Zombie creature tokens onto the battlefield tapped and you gain 3 life. If From Under the Floorboards's madness cost was paid, instead put X of those tokens onto the battlefield tapped and you gain X life.