Ashnod's Altar, Moment of Reckoning, and Naru Meha, Master Wizard

Prerequisites

• Ashnod's Altar on the battlefield
• Moment of Reckoning in hand
• Naru Meha, Master Wizard in hand
• available

Steps

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

Results

• Destroy any number of nonland permanents
• Infinite ETB
• Infinite LTB
• Infinite colorless mana
• Infinite death triggers
• Infinite magecraft triggers
• Infinite recursion of creature cards in your graveyard
• Infinite sacrifice triggers