Phyrexian Unlife + Soul Conduit + Ethereal Champion

Prerequisites

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Steps

1. 1Activate Ethereal Champion by paying 1 life, preventing the next one damage that will be dealt to Ethereal Champion this turn.
2. 2Repeat step 1 until you have zero life.
3. 3Activate Soul Conduit by paying and tapping it, exchanging your life total with an opponent's.
4. 4The opponent loses the game due to having zero life.
5. 5You may repeat this on each of your turns.

Effects

• Target player loses the game on each of your turns