Priest of Urabrask, Blade of Selves, and Hellkite Charger

Prerequisites

• Priest of Urabrask on the battlefield
• Blade of Selves on the battlefield
• Hellkite Charger on the battlefield
• Blade of Selves attached to Priest of Urabrask
• Priest of Urabrask does not have summoning sickness
• You have at least three opponents
• An opponent is unable to block and kill Priest of Urabrask and Hellkite Charger

Steps

1. Declare Priest of Urabrask as an attacker
2. Hellkite Charger and Priest of Urabrask' myriad ability trigger
3. Resolve the Priest of Urabrask trigger, creating at least three token copies of it that are tapped and attacking
4. The Priest of Urabrask tokens enter the battlefield, adding at least nine
5. Resolve the Hellkite Charger trigger, causing you to pay to untap all attacking creatures you control and to get an additional combat phase after this one
6. At the end of your combat phase, Blade of Selves triggers, exiling the Priest of Urabrask tokens
7. Repeat each combat phase

Results

• Infinite combat phases
• Infinite ETB
• Infinite LTB