Nim Deathmantle, Ashnod's Altar, Thorin, Mountain-king, and Raptor Hatchling

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Thorin, Mountain-king on the battlefield
• Raptor Hatchling on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Thorin, adding
2. When Thorin dies, Nim Deathmantle triggers, causing you to pay to return Thorin from your graveyard to the battlefield and attach Nim Deathmantle to it
3. When Thorin enters, it triggers, attaching Nim Deathmantle to Raptor Hatchling, and then having it deal damage to itself
4. Raptor Hatchling triggers, creating a creature token
5. Activate Ashnod's Altar by sacrificing the creature token, adding
6. Repeat

Results

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