Charming Prince, Fiend Hunter, and Preston, the Vanisher

Prerequisites

• Charming Prince in hand
• Fiend Hunter on the battlefield
• Preston, the Vanisher on the battlefield
• available

Steps

1. Cast Charming Prince by paying
2. When Charming Prince enters the battlefield, it triggers, exiling Fiend Hunter until the next end step
3. When Fiend Hunter leaves the battlefield, its second ability triggers, returning all cards exiled with it to the battlefield under their owner's control
4. At the beginning of your end step, Charming Prince triggers, returning Fiend Hunter from exile to the battlefield
5. When Fiend Hunter enters the battlefield, its first ability and Preston trigger
6. Resolve the Fiend Hunter trigger, exiling Charming Prince
7. Resolve the Preston trigger, creating a copy of Fiend Hunter that is a 0/1 Illusion
8. When the token Fiend Hunter enters the battlefield, its first ability triggers, exiling the nontoken Fiend Hunter until the token Fiend Hunter leaves the battlefield
9. When the nontoken Fiend Hunter leaves the battlefield, its second ability triggers, returning Charming Prince from exile to the battlefield
10. When Charming Prince enters the battlefield, it and Preston trigger, with Charming Prince targeting the Fiend Hunter token
11. Resolve the Preston trigger, creating a token copy of Charming Prince that is a 0/1 Illusion
12. When the token Charming Prince enters the battlefield, it triggers, exiling the Fiend Hunter token
13. When the token Fiend Hunter leaves the battlefield, its second ability triggers, returning the nontoken Fiend Hunter from exile to the battlefield
14. Repeat from step 5

Results

• Infinite blinking
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB