Shepherd of the Cosmos, Carrion Feeder, and Ferocity of the Hunt

Prerequisites

• Shepherd of the Cosmos on the battlefield
• Carrion Feeder on the battlefield
• Ferocity of the Hunt on the battlefield

Steps

1. Activate Carrion Feeder by sacrificing Shepherd of the Cosmos
2. When Shepherd of the Cosmos dies, Ferocity of the Hunt triggers, returning Shepherd of the Cosmos from your graveyard to the battlefield
3. When Shepherd of the Cosmos enters the battlefield, it triggers, returning Ferocity of the Hunt from your graveyard to the battlefield attached to Shepherd of the Cosmos
4. Resolve the Carrion Feeder ability Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers