Brotherhood Outcast, Blasting Station, and Kaya's Ghostform

Prerequisites

• Brotherhood Outcast on the battlefield
• Blasting Station on the battlefield
• Kaya's Ghostform on the battlefield

Steps

1. Activate Blasting Station by tapping it and sacrificing Brotherhood Outcast
2. When Brotherhood Outcast dies, Kaya's Ghostform triggers, returning Brotherhood Outcast from your graveyard to the battlefield
3. When Brotherhood Outcast enters the battlefield, it and Blasting Station trigger
4. Resolve the Brotherhood Outcast trigger, returning Kaya's Ghostform from your graveyard to the battlefield attached to Brotherhood Outcast
5. Resolve the Blasting Station trigger, untapping it
6. Resolve the Blasting Station ability from step 1
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite damage