Tree of Perdition + Offspring's Revenge + Corpse Knight

Prerequisites

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Steps

1. 1At the beginning of your combat phase, Offspring's Revenge triggers, exiling Tree of Perdition from your graveyard and creating a 1/1 copy of it with haste.
2. 2When the Tree of Perdition token enters the battlefield, Corpse Knight triggers.
3. 3Holding priority, activate the Tree of Perdition token by tapping it, swapping an opponent's life total with Tree of Perdition's toughness.
4. 4Resolve the Corpse Knight trigger, causing each opponent to lose 1 life.
5. 5The opponent whose life total was swapped loses the game due to having zero or les life.

Effects

• Near-infinite lifeloss for target opponent
• Target opponent loses the game