Mortal Combat

Enchantment, 2BB (4)
At the beginning of your upkeep, if twenty or more creature cards are in your graveyard, you win the game.
The crowd roared, the fighters bled, and the dead piled high in the pits. Only the Cabal could win.
Illus. Mike Ploog

Gatherer Card Rulings [Nov 2009]

• 7/15/2007: you don't have twenty or more creature cards in your graveyard by the time your upkeep starts, the ability won't trigger that turn.
• 7/15/2007: Mortal Combat's ability has an "intervening 'if' clause," so the condition is checked again when the triggered ability resolves. If you don't still have twenty creature cards in your graveyard, the ability does nothing.

Format Legality	Legal in Vintage, Legacy, Extended, MTGO Classic Banned in Standard
Printings (2/16)	Tenth Edition (Rare) Torment (Rare)