Danitha, Benalia's Hope, Yahenni, Undying Partisan, and Kaya's Ghostform

Prerequisites

• Danitha, Benalia's Hope on the battlefield
• Yahenni, Undying Partisan on the battlefield
• Kaya's Ghostform on the battlefield
• Kaya's Ghostform attached to Danitha

Steps

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

Results

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