Zulaport Cutthroat + Reassembling Skeleton + Carnival of Souls + Phyrexian Altar

Prerequisites

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Steps

1. 1Activate Phyrexian Altar by sacrificing Reassembling Skeleton, adding one mana of any color.
2. 2Zulaport Cutthroat triggers, causing each opponent to lose 1 life and you to gain 1 life.
3. 3Activate Reassembling Skeleton by paying , returning it from your graveyard to the battlefield tapped.
4. 4Reassembling Skeleton enters the battlefield, triggering Carnival of Souls, causing you to lose 1 life and add to your mana pool.
5. 5Repeat.

Effects

• Each opponent loses the game
• Infinite death triggers
• Infinite ETB
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite LTB
• Infinite sacrifice triggers