Triskaidekaphobia + Tree of Perdition

Triskaidekaphobia
Tree of Perdition

Requires
Triskaidekaphobia must be on the battlefield. Tree of Perdition must be on the battlefield.
Steps
  1. At the beginning of your upkeep, Triskaidekaphobia triggers; hold priority.
  2. Activate Tree of Perdition to make target opponent's life total 13.
  3. Allow Triskaidekaphobia's trigger to resolve, making that opponent lose the game.
Results
Target player loses the game.