Cass, Hand of Vengeance, Mortarpod, and Cartouche of Solidarity

Prerequisites

• Cass, Hand of Vengeance on the battlefield
• Mortarpod on the battlefield
• Cartouche of Solidarity on the battlefield

Steps

1. Activate the creature that has Mortarpod and Cartouche of Solidarity attached by sacrificing it
2. When the creature dies, Cass triggers, returning Cartouche of Solidarity from your graveyard to the battlefield attached to another creature, and then attaching Mortarpod to the same creature
3. When Cartouche of Solidarity enters, it triggers, creating a 1/1 Human Warrior creature token
4. Resolve the ability from step 1, dealing 1 damage to any target
5. Repeat

Results

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