John F. Gamefreak knocks on your front door and offers a proposition - he knows that you're the most knowledgable Pokemon fan on the face of the Earth, and he'd like YOUR help with rebalancing the game!
As such, he's allowing you to add ONE (1) new move to a shitmon to make them more viable.
Hard mode: they must make some sort of sense

>Pic related
>Focus Blast