Phyrexian Unlife + Axis of Mortality + Ethereal Champion

Prerequisites

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Steps

1. 1At the beginning of your upkeep, Axis of Mortality triggers.
2. 2Activate Ethereal Champion by paying 1 life, preventing the next one damage that will be dealt to Ethereal Champion this turn.
3. 3Repeat step 2 until you have zero life.
4. 4Resolve the Axis of Mortality trigger, swapping your life total with an opponent.
5. 5The opponent loses the game due to having zero life.
6. 6You may repeat this on each of your turns.

Effects

• Target player loses the game on each of your turns