Nim Deathmantle, Ashnod's Altar, and Hornet Queen

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Hornet Queen on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Hornet Queen, adding
2. Hornet Queen dies, triggering Nim Deathmantle, causing you to pay to return Hornet Queen from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. Hornet Queen enters the battlefield, creating four 1/1 Insect creature tokens
4. Activate Ashnod's Altar by sacrificing an Insect, adding
5. Repeat

Results

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