Nim Deathmantle, Ashnod's Altar, and Crawling Chorus

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Crawling Chorus on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Crawling Chorus, adding
2. Crawling Chorus dies, triggering itself and Nim Deathmantle
3. Resolve the Crawling Chorus trigger, creating a 1/1 Phyrexian Mite creature token
4. Activate Ashnod's Altar by sacrificing the Phyrexian Mite, adding
5. Resolve the Nim Deathmantle trigger from step 2, causing you to pay to return Crawling Chorus from your graveyard to the battlefield, and attach Nim Deathmantle to it
6. Repeat

Results

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