Xu-Ifit, Osteoharmonist, Thornbite Staff, and Blasting Station

Prerequisites

• Xu-Ifit, Osteoharmonist on the battlefield
• Thornbite Staff on the battlefield
• Blasting Station on the battlefield

Steps

1. Activate Xu-Ifit by tapping it, returning a creature card from your graveyard to the battlefield
2. When the creature enters the battlefield, Blasting Station triggers, untapping Blasting Station
3. Activate Blasting Station by tapping it and sacrificing the creature returned in step 1
4. When the creature dies, Xu-Ifit triggers, untapping itself
5. Resolve the Blasting Station ability
6. Repeat

Results

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