Tree of Perdition, Dollhouse of Horrors, and Purphoros, God of the Forge

Prerequisites

• Tree of Perdition in the graveyard
• Dollhouse of Horrors on the battlefield
• Purphoros, God of the Forge on the battlefield
• You control less than two Constructs
• available

Steps

1. Activate Dollhouse of Horrors by paying , tapping it and exiling Tree of Perdition from your graveyard, creating a token copy of Tree of Perdition that is a 0/0 Construct with haste
2. When the Tree of Perdition token enters the battlefield, Purphoros triggers
3. Holding priority, activate the Tree of Perdition token by tapping it, swapping an opponent's life total with Tree of Perdition's toughness
4. Resolve the Purphoros trigger, dealing 2 damage to each opponent
5. The opponent whose life total was swapped loses the game due to having zero or les life

Results

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