Thorin, Mountain-king, Raphael, Ninja Destroyer, Nim Deathmantle, and Spawning Pit

Prerequisites

• Thorin, Mountain-king on the battlefield
• Raphael, Ninja Destroyer on the battlefield
• Nim Deathmantle on the battlefield
• Spawning Pit on the battlefield
• available

Steps

1. Activate Spawning Pit by sacrificing Thorin
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 Raphael, and then having Raphael deal 6 damage to itself
4. Raphael triggers, adding six
5. Resolve the Spawning Pit ability
6. Repeat

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite artifact tokens
• Infinite charge counters on a permanent
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite creature tokens
• Infinite death triggers
• Infinite red mana