Scrapwork Cohort, Nim Deathmantle, and Ashnod's Altar

Prerequisites

• Scrapwork Cohort on the battlefield
• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Scrapwork Cohort, adding
2. Scrapwork Cohort dies, triggering Nim Deathmantle, causing you to pay to return Scrapwork Cohort from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. Scrapwork Cohort enters the battlefield, creating a 1/1 Soldier creature token
4. Activate Ashnod's Altar by sacrificing the Soldier token, adding
5. Repeat

Results

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