Shepherd of the Cosmos, Blasting Station, and Changing Loyalty

Prerequisites

• Shepherd of the Cosmos on the battlefield
• Blasting Station on the battlefield
• Changing Loyalty on the battlefield

Steps

1. Activate Blasting Station by tapping it and sacrificing Shepherd of the Cosmos
2. When Shepherd of the Cosmos dies, Changing Loyalty triggers, returning Shepherd of the Cosmos from your graveyard to the battlefield
3. When Shepherd of the Cosmos enters the battlefield, it and Blasting Station trigger
4. Resolve the Shepherd of the Cosmos trigger, returning Changing Loyalty from your graveyard to the battlefield attached to Shepherd of the Cosmos
5. Resolve the Blasting Station trigger, untapping it
6. Resolve the Blasting Station ability from step 1
7. Repeat

Results

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