Brotherhood Outcast, Shilgengar, Sire of Famine, and Changing Loyalty

Prerequisites

• Brotherhood Outcast on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Changing Loyalty on the battlefield

Steps

1. Activate Shilgengar 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 Shilgengar ability
5. Repeat

Results

• Infinite Blood tokens
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers