Phyrexian Unlife + Magus of the Mirror + Necropotence

Prerequisites

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Steps

1. 1During your upkeep, activate Necropotence by paying 1 life, exiling the top card of your library face down.
2. 2Repeat step 1 until you have zero life.
3. 3Activate Magus of the Mirror by tapping and sacrificing it, exchanging your life total with an opponent.
4. 4The opponent loses the game due to having zero life.

Effects

• Target player loses the game