Danitha, Benalia's Hope, Kaya's Ghostform, and Thermopod

Prerequisites

• Danitha, Benalia's Hope on the battlefield
• Kaya's Ghostform on the battlefield
• Thermopod on the battlefield

Steps

1. Activate Thermopod by sacrificing Danitha, adding
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. Repeat

Results

• Infinite creature LTB
• Infinite creature ETB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite red mana