Here's a set out of the blue. Surprisingly successful for a Pokemon that's long out of the OU tier.
LO SubCham
Medicham (M) @ Life Orb
Trait: Pure Power
EVs: 56 HP / 252 Atk / 200 Spd
Adamant Nature (+Atk, -SAtk)
- Hi Jump Kick
- Psycho Cut
- Ice Punch
- Substitute
You might be thinking that this thing is a joke, right? A slow-ass, defensively inept Pokemon whos only saving grace is its attack stat that goes unparalleled bar the Uber Deoxys-A. What right does it have that you can't get with something better, like Haxorus (if you're going for a raw attack sweeper)? That's where this set comes in.
The worst part of this set is finding the opportunity. Coming in after a Pokemon has fainted on basically a slow or relatively non-threatening member of the opponent's team is ultimately the catch to this. If you can take that opportunity, you try to get up Substitute. If you can get that up, you're basically guaranteed to get a KO that match. If not 2 or more. Cham's frailness and NU status is a blessing in disguise. People don't expect much from it. If they have a wall in that can't take the hit from it, they'll just switch out to something that resists your supposed Choiced Super Effective move, which is where you'll get your Sub. HJK/Psycho Cut/Ice Punch is incredible coverage, hitting almost everything in the OU tier for incredible damage, even Skarmory takes a whopping 65% from HJK, which is one of the few walls that can even get in on Medicham and do anything about it.
Even if you don't ever get a chance to set up, throwing out even a single attack from 480 attack with Life Orb is going to scar, if not kill SOMETHING.
Attack is obviously maximized, Speed is enough to outpace Max Speed TTar and some less invested mons that usually use that speed number as a bar. The rest is put in HP because, despite the suicidal look of the set, the bulk is the key part. It's barely enough to take weak and resisted priority and not break subs.
It's not the best sweeper in the world by any means, but from my experience, it can hold its own in the OU Metagame. It's surprising and hits like a truck.