Nim Deathmantle, Ashnod's Altar, Thorin, Mountain-king, and Sporeweb Weaver

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Thorin, Mountain-king on the battlefield
• Sporeweb Weaver 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 Sporeweb Weaver, and then having it deal damage to itself
4. Sporeweb Weaver triggers, creating a creature token and causing you to gain 1 life Activate Ashnod's Altar by sacrificing the creature token, adding
5. Repeat

Results

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