Absol @ Focus Sash
Nature: Adamant
Evs: 252 Atk / 252 Spd / 4 SDef
Ability: Super Luck
- Snatch / Taunt
- Night Slash
- Sucker Punch
- Magic Coat
I'm reposting this because Absol does work. It took me a bit of getting used to when I used him as a lead, but it does its job pretty well.
It's a good idea to Magic Coat against Darkrai leads, since they will inevitably try to Dark Void. Sometimes they will also try to use Trick, so you can just let Absol take the Scarf, and switch out. Against Deoxys leads, you're able to Snatch away their screens if they're Dual Screen variants. The Spikers are a little more annoying, but they're still easy to kill, but as far as I'm concerned, they're just wasting a pokemon anyway.
Sucker Punch is more so that he can come in later and stop threats that are trying to set up. Eg. If a Rayquaza thinks that he can DD up in your face, Snatch away the boost, and then kill him with Sucker Punch before he uses Extremespeed (possible OHKO after SR). If you predict that he'll DD again, just Snatch again.
There are a lot of variants of this Absol that use Superpower over Sucker Punch, but I really don't think it's needed. It's not really going to help against Darkrai, considering that most of them are Sashed, meaning that they can kill you first, since they're faster. It's not going to help much against Dialga, particularly BU Dialga. It won't 2HKO when you take the Atk drop into account, while Dialga can sure as hell 2HKO. It's not even needed against Blissey, since Blissey is screwed against Absol no matter what. Statuses are Magic Coated back, CMs are stolen, Night Slash packs a hell of a wallop, so Blissey won't win without a lot of luck.
Of course, people are free to modify the set whatever way they want. But this set has worked pretty well for me.
EDIT: Taunt actually works pretty well over Snatch as well. It helps a lot against the Spiker Deoxys', Forretress and SR Groudon which the Snatch version has quite a problem with.