Ash Ketchum with a Master Ball vs Kyubey.
Now Ash will finally have what he always wanted: A Magical girl harem.
Sure, they'll eventually become Eldritch Abomination that'll kill him and may or may not eventually destroy the Earth. But you know what? F(*k Ash and his world anyway.
Then after Kyubey gathers the Grief Seeds and returns to his home planet, Sailor Moon appears, aims with her Imperium Plot-Device Crystal and blows it up.