Sidisi, Regent of the Mire, Karmic Guide, Blasting Station, and Sparring Mummy

Prerequisites

• Sidisi, Regent of the Mire on the battlefield
• Karmic Guide in the graveyard
• Blasting Station on the battlefield
• Sparring Mummy on the battlefield

Steps

1. Activate Sidisi by tapping it and sacrificing Sparring Mummy, returning Karmic Guide from your graveyard to the battlefield
2. When Karmic Guide enters the battlefield, it and Blasting Station trigger
3. Resolve the Blasting Station trigger, untapping it
4. Resolve the Karmic Guide trigger, returning Sparring Mummy from your graveyard to the battlefield
5. When Sparring Mummy enters the battlefield, it and Blasting Station trigger
6. Resolve the Sparring Mummy trigger, untapping Sidisi
7. Resolve the Blasting Station trigger, untapping it
8. Activate Blasting Station by tapping it and sacrificing Karmic Guide
9. Repeat

Results

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