I don't really like posting on something so old, but apparently there will be no new posts for movesets in Gen VII (aside from the new Pokémon), so here we go
A Gen VII troll set for Ambipom =3 (works in generations V and VI as well)
Ambipom @King's Rock
EVs: 252 Atk/252 Spd/4 HP
Jolly Nature (+Spd, -SAtk)
- Fake Out
You can tell what the set is about just by looking at it. It's not particularly powerful, but oh man is it fun!
Fake Out into Fling-King's Rock is two turns of guaranteed flinching (assuming you are faster than your opponent of course). Both of these get a Technician boost, as well.
You may then steal their item with Thief (which gets the maximum Technician boost)! This in and of itself screws many sets over (like many item-shenanigan movesets). Then you have the option to Fling their item back at them, or just keep it if you like it =D
Acrobatics is there as a move with extremely good synergy with this set. It covers Fighting-types (if you want to stay and take a hit that is, or if you are confident you can OHKO it), and most of all: when you have an item, it's 55 base power gets boosted by Technician, and when you don't, you get a whopping 110 base power! So you pretty much always use it safely without worrying about the weaker version.
So there you have it! Not the best competitive moveset, but definitely viable in UU, where many Pokémon depend on their item to bring out their full potential!
(Oh yea, and no-item Acrobatics outspeeds and OHKOs offensive Gallade and offensive Mienshao, two big Fighting-type threats.)
Calculations done on the Showdown Calculator