Nim Deathmantle, Su-Chi, and Life Chisel

Prerequisites

• Nim Deathmantle on the battlefield
• Su-Chi on the battlefield
• Life Chisel on the battlefield
• It is currently your upkeep step

Steps

1. Activate Life Chisel by sacrificing Su-Chi
2. Su-Chi and Nim Deathmantle triggers
3. Resolve the Su-Chi trigger, adding
4. Resolve the Nim Deathmantle trigger, causing you to pay to return Su-Chi from your graveyard to the battlefield, and then attach Nim Deathmantle to it
5. Resolve the Life Chisel trigger, gaining 4 life
6. Repeat

Results

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