Saffi Eriksdotter, Carrion Feeder, and Shepherd of the Cosmos

Prerequisites

• Saffi Eriksdotter on the battlefield
• Carrion Feeder on the battlefield
• Shepherd of the Cosmos on the battlefield

Steps

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

Results

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