Nim Deathmantle, Ashnod's Altar, and Eyeblight Cullers

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Eyeblight Cullers on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Eyeblight Cullers, adding
2. When Eyeblight Cullers dies, it and Nim Deathmantle triggers
3. Resolve the Eyeblight Cullers trigger, creating three 1/1 Elf Warrior creature tokens
4. Activate Ashnod's Altar by sacrificing an Elf Warrior, adding
5. Resolve the Nim Deathmantle trigger from step 2, causing you to pay to return Eyeblight Cullers from your graveyard to the battlefield, and attach Nim Deathmantle to it
6. Repeat

Results

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