Nim Deathmantle, Ashnod's Altar, Ashaya, Soul of the Wild, and Sporemound

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Ashaya, Soul of the Wild on the battlefield
• Sporemound on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Ashaya, adding
2. When Ashaya dies, Nim Deathmantle triggers, causing you to pay to return Ashaya from your graveyard to the battlefield, and attaching Nim Deathmantle to it
3. When Ashaya enters the battlefield, Sporemound triggers, creating a 1/1 Saproling creature token
4. Activate Ashnod's Altar by sacrificing the creature token, adding
5. Repeat
6. If you control a nontoken creature that has haste, you may instead sacrifice it, and then tap it each iteration to get infinite green mana and colorless mana

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite green mana
• Infinite landfall triggers
• Infinite LTB
• Infinite sacrifice triggers