Naru Meha, Master Wizard, Rise Again, and Yahenni, Undying Partisan

Prerequisites

• Naru Meha, Master Wizard in hand
• Rise Again in hand
• Yahenni, Undying Partisan on the battlefield
• available

Steps

1. Cast Rise Again by paying its mana cost
2. Holding priority, cast Naru Meha by paying its mana cost
3. When Naru Meha enters, it triggers, targeting Rise Again
4. Holding priority, activate Yahenni by sacrificing Naru Meha, Resolve the Naru Meha trigger, copying Rise Again Resolve the Rise Again copy, returning Naru Meha from your graveyard to the battlefield
5. Repeat from step 3

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers