Shepherd of the Cosmos, Evereth, Viceroy of Plunder, and Necrogen Communion

Prerequisites

• Shepherd of the Cosmos on the battlefield
• Evereth, Viceroy of Plunder on the battlefield
• Necrogen Communion on the battlefield

Steps

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

Results

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