Tree of Perdition, Blasphemous Act, and Boros Reckoner

Prerequisites

• Tree of Perdition on the battlefield
• Blasphemous Act in hand
• Boros Reckoner on the battlefield
• Tree of Perdition does not have summoning sickness
• You have enough mana available to cast Blasphemous Act

Steps

1. Activate Tree of Perdition, exchanging target opponent's life total with Tree of Perdition's toughness
2. Cast Blasphemous Act, dealing thirteen damage to all creatures
3. Boros Reckoner triggers, dealing thirteen damage to target opponent

Results

• Target player takes a lethal amount of damage