Disa the Restless, Altar of Dementia, Conspiracy, and Golgari Thug

Prerequisites

• Disa the Restless on the battlefield
• Altar of Dementia on the battlefield
• Conspiracy on the battlefield
• Golgari Thug on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Golgari Thug
2. When Golgari Thug 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 Golgari Thug's power, which will cause you to mill Golgari Thug
4. As Golgari Thug is a Lhurgoyf due to Conspiracy, Disa's first ability triggers, returning Golgari Thug from your graveyard to the battlefield
5. Repeat

Results

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