Disa the Restless, Altar of Dementia, Ilharg, the Raze-Boar, and Conspiracy

Prerequisites

• Disa the Restless on the battlefield
• Altar of Dementia on the battlefield
• Ilharg, the Raze-Boar on the battlefield
• Conspiracy on the battlefield

Steps

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

Results

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