Nim Deathmantle, Ashnod's Altar, and Kozilek's Predator

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Kozilek's Predator on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Kozilek's Predator, adding
2. When Kozilek's Predator dies, Nim Deathmantle triggers, causing you to pay to return Kozilek's Predator from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. When Kozilek's Predator enters the battlefield, it triggers, creating two 0/1 Eldrazi Spawn creature tokens
4. Activate Ashnod's Altar by sacrificing an Eldrazi Spawn, adding
5. Repeat

Results

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