Chainer, Dementia Master, Wurmcoil Engine, Phyrexian Altar, and Dross Harvester

Prerequisites

• Chainer, Dementia Master on the battlefield
• Wurmcoil Engine on the battlefield
• Phyrexian Altar on the battlefield
• Dross Harvester on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Wurmcoil Engine, adding
2. When Wurmcoil Engine dies, it and Dross Harvester trigger
3. Resolve the Wurmcoil Engine trigger, creating two 3/3 Wurm artifact creature tokens
4. Resolve the Dross Harvester trigger, causing you to gain 2 life
5. Activate Phyrexian Altar twice by sacrificing the Wurm tokens, adding
6. When the Wurms die, Dross Harvester trigger twice, causing you to gain 4 life
7. Activate Chainer by paying and 3 life, putting Wurmcoil Engine from your graveyard onto the battlefield
8. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite lifegain triggers
• Infinite lifegain