Tuktuk the Explorer, Nim Deathmantle, and Ashnod's Altar

Prerequisites

• Tuktuk the Explorer on the battlefield
• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Tuktuk the Explorer, adding
2. Tuktuk the Explorer dies, triggering itself and Nim Deathmantle
3. Resolve the Tuktuk the Explorer trigger, creating a 5/5 Tuktuk the Returned artifact creature token
4. Activate Ashnod's Altar by sacrificing Tuktuk the Returned, adding
5. Resolve the Nim Deathmantle trigger from step 2, causing you to pay to return Tuktuk the Explorer 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