Nevinyrral, Urborg Tyrant, Nim Deathmantle, and Thermopod

Prerequisites

• Nevinyrral, Urborg Tyrant on the battlefield
• Nim Deathmantle on the battlefield
• Thermopod on the battlefield
• At least two creatures have died this turn
• available

Steps

1. Activate Thermopod's second ability by sacrificing Nevinyrral, adding
2. When Nevinyrral dies, its second ability and Nim Deathmantle trigger
3. Resolve the Nevinyrral trigger, choosing not to pay
4. Resolve the Nim Deathmantle trigger, causing you to pay to return Nevinyrral to the battlefield from your graveyard, and attach Nim Deathmantle to it
5. When Nevinyrral enters the battlefield, its first ability triggers, creating a tapped 2/2 Zombie creature token for each creature that has died this turn
6. Activate Thermopod's second ability three times by sacrificing three Zombie tokens, adding
7. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite red mana
• Infinite sacrifice triggers
• Infinite tapped creature tokens