Myr Battlesphere, Nim Deathmantle, and Ashnod's Altar

Prerequisites

• Myr Battlesphere on the battlefield
• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

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

Results

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