Preston, the Vanisher + Fiend Hunter + Ephemerate + Blasting Station

Preston, the Vanisher

Fiend Hunter

Ephemerate

Blasting Station

How it works

1. Cast Ephemerate by paying , blinking Fiend Hunter.
2. Fiend Hunter enters the battlefield, triggering itself, Preston and Blasting Station.
3. Resolve the Fiend Hunter trigger, choosing not to exile a creature.
4. Resolve the Blasting Station trigger, untapping it.
5. Resolve the Preston trigger, creating a token copy of Fiend Hunter that is a 0/1 white Illusion.
6. The Fiend Hunter token enters the battlefield, triggering itself and Blasting Station.
7. Resolve the Blasting Station trigger, untapping it.
8. Resolve the Fiend Hunter token's trigger, exiling the nontoken Fiend Hunter.
9. Activate Blasting Station by tapping it and sacrificing the Fiend Hunter token.
10. The token dies, returning the nontoken Fiend Hunter from exile to the battlefield.
11. Repeat from step 2 an arbitrarily large number of times.
12. Resolve all Blasting Station abilities, dealing infinite damage to any target(s).