Favoroite Pokemon Sweeper Combos?

Alrighty. Pokemon X/Y has been out for a while now. And I know there has to be a bunch of people here who play it. Even if you haven't, you may or may not have played older Pokemon games.

I'm curious, what Sweeper Combos do you like to use in competitive battle?

I personally, am a huge fan of a good Magikarp sweep >.> EV train speed, use a Smeargle use Belly Drum, then Baton Pass to Magikarp holding a Focus Sash (to retain 1 HP) and just Flail the enemy to death. Nothing worse than getting fin slapped to death by a Pokemon that ca only learn 3 moves.

This belongs in the pokemon thread. But while I'm here I enjoy watching rattata and magikarp sweeps on youtube. Especially any rattata sweeps that mention youngster joey.

But again...Pokemon thread.

Until your opponent realizes what you're setting up and does anything that he or she can possibly do to stop it.
If they have Sandstorm or Blizzard up, you're fucked.
If they have Spikes, Toxic Spikes or the ever favorite Stealth Rock up, you're fucked.
If they have any priority move, you're fucked.
If they use any status move, you're fucked.

There are literally so many ways to counter this technique that if you lose to it, you should just fucking eat your game because it'll have a better use as fiber to keep your shit together than in your fucking piece of shit NERF case 2DS. Try bashing that shit against the helmet you're supposed to wear, you retard.

I like fairy pokemon sweepers... but I don't play competitive.

I don't play competitive Gen 6. Don't like Mega Pinsir Wars.

Gen 5: Sun up -> Jumpluff -> Sleep Powder the Ice type they will send in because they're bad -> Swords Dance -> Acrobatics with a Flying Gem/Seed Bomb (whatever is better) -> repeat until take out all 6 with a Jumpluff.

Not a sweeper, but fun: Lileep with a Eviolite in Ubers. Tank that Specs Kyogre Ice Beam like a boss.

Gen 4: Fire Monkey of Doom.

Rayquaza + dragon dance + Outrage... does it counts?