Near-infinite damageTarget opponent loses the game
How it works
Activate Tree of Perdition by tapping it, swapping its toughness and an opponent's life total.
Cast Soul Immolation by paying 3 and choosing to blight a number of -1/-1 counters equal to an opponent's life total, dealing damage to each opponent and each opposing creature equal to the number of -1/-1 counters placed
The opponent whose life total was swapped loses the game due to having 0 or less life.