Nim Deathmantle, Ashnod's Altar, and Aether Channeler

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Aether Channeler on the battlefield
• available

Steps

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

Results

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