From Under the Floorboards

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.