Loyal Retainers, Karmic Guide, Altar of Dementia, and Sakashima the Impostor

Prerequisites

• Loyal Retainers on the battlefield
• Karmic Guide on the battlefield
• Altar of Dementia on the battlefield
• Sakashima the Impostor in the graveyard

Steps

1. Activate Loyal Retainers by sacrificing it, returning Sakashima the Impostor from your graveyard to the battlefield as a copy of Karmic Guide
2. When Sakashima the Impostor enters the battlefield, it triggers, returning Loyal Retainers from your graveyard to the battlefield
3. Activate Altar of Dementia by sacrificing Sakashima the Impostor
4. Repeat

Results

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