Nim Deathmantle, Ashnod's Altar, and Dread Drone

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Dread Drone on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Dread Drone, adding
2. When Dread Drone dies, Nim Deathmantle triggers, causing you to pay to return Dread Drone from your graveyard to the battlefield and attach Nim Deathmantle to it
3. When Dread Drone enters, it triggers, creating two creature tokens
4. Activate Ashnod's Altar by sacrificing a creature token, adding
5. Repeat

Results

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