Wurmcoil Engine, Nim Deathmantle, and Ashnod's Altar

Prerequisites

• Wurmcoil Engine on the battlefield
• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Wurmcoil Engine adding
2. Wurmcoil Engine dies, triggering itself and Nim Deathmantle
3. Resolve the Wurmcoil Engine triggers, creating a 3/3 Wurm token with deathtouch and a 3/3 Wurm token with lifelink
4. Holding priority, activate Ashnod's Altar by sacrificing one of the Wurm token, adding
5. Resolve the Nim Deathmantle triggers, causing you to pay to return Wurmcoil Engine from your graveyard to the battlefield, and attach Nim Deathmantle to it
6. Repeat

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers