Kaya's Ghostform, Angel of Indemnity, and Yahenni, Undying Partisan

Prerequisites

• Kaya's Ghostform on the battlefield
• Angel of Indemnity on the battlefield
• Yahenni, Undying Partisan on the battlefield

Steps

1. Activate Yahenni by sacrificing Angel of Indemnity
2. When Angel of Indemnity dies, Kaya's Ghostform triggers, returning Angel of Indemnity from your graveyard to the battlefield
3. When Angel of Indemnity enters, it triggers, returning Kaya's Ghostform from your graveyard to the battlefield attached to Angel of Indemnity Resolve the Yahenni ability
4. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers