Combo Pain Magnification +Megrim +Furnace of Rath + Magic: the Gathering MTG

Make the opponent discard a card. Megrim's ability will trigger, dealing 2 damage to the opponent Furnace of Rath's ability will make double that damage to be dealt, dealing 4 damage to the opponent. Pain Magnification's ability will trigger, the opponent discards a card The loop will repeat until the opponent has no more cards in hand.

Legallity