Ashnod's Altar, Supernatural Stamina, and Naru Meha, Master Wizard

Prerequisites

• Ashnod's Altar on the battlefield
• Supernatural Stamina in hand
• Naru Meha, Master Wizard in hand
• available

Steps

1. Cast Supernatural Stamina by paying its mana cost
2. Holding priority, cast Naru Meha by paying its mana cost
3. When Naru Meha enters, it triggers, copying Supernatural Stamina, with the copy targeting Naru Meha
4. Resolve the copy of Supernatural Stamina
5. Holding priority, activate Ashnod's Altar by sacrificing Naru Meha
6. When Naru Meha dies, it triggers, returning it from your graveyard to the battlefield
7. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite magecraft triggers