Kaya's Ghostform, Thermopod, and Sun Titan

Prerequisites

• Kaya's Ghostform on the battlefield
• Thermopod on the battlefield
• Sun Titan on the battlefield

Steps

1. Activate Thermopod by sacrificing Sun Titan
2. When Sun Titan dies, Kaya's Ghostform triggers, returning Sun Titan from your graveyard to the battlefield
3. When Sun Titan enters, it triggers, returning Kaya's Ghostform from your graveyard to the battlefield attached to Sun Titan Repeat

Results

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