Angel of Invention, Nim Deathmantle, and Ashnod's Altar

Prerequisites

• Angel of Invention on the battlefield
• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Angel of Invention, adding
2. Angel of Invention dies, triggering Nim Deathmantle, causing you to pay to return Angel of Invention from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. Angel of Invention enters the battlefield, creating two 1/1 Servo creature tokens
4. Activate Ashnod's Altar by sacrificing a Servo, adding
5. Repeat

Results

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