Kaya's Ghostform, Altar of Dementia, and Sun Titan

Prerequisites

• Kaya's Ghostform on the battlefield
• Altar of Dementia on the battlefield
• Sun Titan on the battlefield

Steps

1. Activate Altar of Dementia 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 Resolve the Altar of Dementia ability
4. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill