Kaya's Ghostform, Iridescent Drake, and Yahenni, Undying Partisan

Prerequisites

• Kaya's Ghostform on the battlefield
• Iridescent Drake on the battlefield
• Yahenni, Undying Partisan on the battlefield

Steps

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

Results

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