Disa the Restless, Altar of Dementia, Arashin Sovereign, and Conspiracy

Prerequisites

• Disa the Restless on the battlefield
• Altar of Dementia on the battlefield
• Arashin Sovereign on the battlefield
• Conspiracy on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Arashin Sovereign
2. When Arashin Sovereign dies, it triggers, putting itself from your graveyard onto the top of your library
3. Resolve the Altar of Dementia ability, causing you to mill cards equal to Arashin Sovereign's power, which will cause you to mill Arashin Sovereign
4. As Arashin Sovereign is a Lhurgoyf due to Conspiracy, Disa's first ability triggers, returning Arashin Sovereign from your graveyard to the battlefield
5. Repeat

Results

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