Naru Meha, Master Wizard, Extract from Darkness, and Yahenni, Undying Partisan

Prerequisites

• Naru Meha, Master Wizard in hand
• Extract from Darkness in hand
• Yahenni, Undying Partisan on the battlefield
• available

Steps

1. Cast Extract from Darkness by paying its mana cost Holding priority, cast Naru Meha by paying its mana cost
2. When Naru Meha enters, it triggers, targeting Extract from Darkness
3. Holding priority, activate Yahenni by sacrificing Naru Meha
4. Resolve the Naru Meha trigger, copying Extract from Darkness Resolve the Extract from Darkness copy, causing each player to mill two cards and returning Naru Meha from your graveyard to the battlefield
5. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill
• Infinite magecraft triggers