Loyal Retainers, Karmic Guide, Blasting Station, and Sakashima the Impostor

Prerequisites

• Loyal Retainers on the battlefield
• Karmic Guide on the battlefield
• Blasting Station on the battlefield
• Sakashima the Impostor in the graveyard

Steps

1. Activate Loyal Retainers by sacrificing it, returning Sakashima from your graveyard to the battlefield as a copy of Karmic Guide
2. When Sakashima enters the battlefield, it and Blasting Station trigger
3. Resolve the Sakashima trigger, returning Loyal Retainers from your graveyard to the battlefield
4. Resolve the Blasting Station trigger, untapping it
5. Activate Blasting Station by tapping it and sacrificing Sakashima
6. Repeat

Results

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