Saffi Eriksdotter, Shepherd of the Cosmos, and Hammerhead, Maggia Boss

Prerequisites

• Saffi Eriksdotter on the battlefield
• Shepherd of the Cosmos on the battlefield
• Hammerhead, Maggia Boss on the battlefield

Steps

1. Activate Saffi by sacrificing it, targeting Shepherd of the Cosmos Activate Hammerhead 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 Hammerhead ability
4. Repeat

Results

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