Pia and Kiran Nalaar, Nim Deathmantle, and Ashnod's Altar

Prerequisites

• Pia and Kiran Nalaar on the battlefield
• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

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

Results

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