Hex Parasite, Repay in Kind, and Phyrexian Unlife

Prerequisites

• Hex Parasite on the battlefield
• Repay in Kind in hand
• Phyrexian Unlife on the battlefield
• You have an even life total
• available

Steps

1. Activate Hex Parasite by paying 2 life, targeting itself
2. Repeat step 1 until you have zero life
3. Resolve all Hex Parasite abilities, removing zero counters from it
4. Cast Repay in Kind by paying , causing each opponent's life total to become zero
5. Each opponent loses the game as a state-based action due to having zero or less life

Results

• Each opponent loses the game
• Near-infinite lifeloss