Brotherhood Outcast, Altar of Dementia, and Changing Loyalty

Prerequisites

• Brotherhood Outcast on the battlefield
• Altar of Dementia on the battlefield
• Changing Loyalty on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Brotherhood Outcast
2. When Brotherhood Outcast dies, Changing Loyalty triggers, returning Brotherhood Outcast from your graveyard to the battlefield
3. When Brotherhood Outcast enters the battlefield, it triggers, returning Changing Loyalty from your graveyard to the battlefield attached to Brotherhood Outcast
4. Resolve the Altar of Dementia ability
5. Repeat

Results

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