Preston, the Vanisher, Fiend Hunter, and Flickerwisp

Prerequisites

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

Steps

1. Cast Flickerwisp by paying
2. When Flickerwisp 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, Flickerwisp 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 Flickerwisp
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 Flickerwisp from exile to the battlefield
10. When Flickerwisp enters the battlefield, it and Preston trigger, with Flickerwisp targeting the Fiend Hunter token
11. Resolve the Preston trigger, creating a token copy of Flickerwisp that is a 0/1 Illusion
12. When the token Flickerwisp 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