RAZOR FLINCH AMBIPOM
Item: King's Rock/Razor Fang
Ability: Technician
EV: 252 Speed, 252 Attack, 4 HP
Nature: Jolly (-Sp.Attack, +Speed)
Moves: Fake Out, Covet, U-Turn, Fling
I created this set today when experimenting with some of the more gimmicky item combinations (i.e. Unburden + Fling/Herbs) and ended up falling in love with it. What you're looking at is a treacherous monkey who offers an amazing lead with its consecutive flinching strategy. You will start with Fake Out, causing the first flinch with priority as well as STAB and Technician boosts. Ambipomb's significant speed should then allow him to start the next turn with Fling, which although only deals a mere 45 damage even with boost (perhaps twice that against the right typing), it will annoyingly flinch your target for the second time if a King's Rock or Razor Fang was thrown. Now that you have no item, you're free to snatch your opponent's with Covet, which is one of the most damaging Technician-influenced move Ambipom can have, thanks to its perfect 60 base power and STAB. This consecutive pattern in itself is enough to knock out some of the less bulky Pokemon, but even if they aren't defeated, you now have their item, which in itself will screw over plenty of strategies. As long as you didn't nab unwanted Choice items or something damaging, you've done yourself well. Now you can U-Turn out of there, signifying the start of Ambipom's hit-and-run routine.
Besides against Ghost-types (and even then, Fling delivers 2x effectiveness in most cases), the initial strategy doesn't really have any downsides. Even against types that resist or Pokemon that are more bulky, in the end you still manage to steal their item, which will definitely ruin the more common threats such as Scizor that rely on Life Orb. Now, this set sort of restricts Ambipom from consistently battling for any decent amount of time, but Ambipom was never really the sort to hold its ground, even with moves such as Low Kick or Return. Let me know your thoughts!