SubDisable Gengar; not super creative, nor original, but it's not a bad set.Idk if this set is common knowledge but today was the first time K ran into it on PO.
Gengar@leftovers
EV (this is a guess) Timid 252spAtk 252Speed
Substitute
Disable
Shadow ball
I didn't see the last move but I'm guessing focus blast or pain split.
It basically worked like faster torment tran disableing the move that breaks it's sub. At the time my volcrona only had bug buzz and fireblast for attacking moves and since fire blast was disabled I couldn't break it. I'm not sure how effective this set would be overall but it seems like it has a niche.