Nim Deathmantle, Ashnod's Altar, and Drowner of Hope

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Drowner of Hope on the battlefield
• available

Steps

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

Results

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