Ambipom can be setup to do many different things, but the moveset i'll show in particular will be used for disruption and partial offense using hit and run strategy. This is actually for Ambipom with the egg move Fake out and the ability Technician.
To be used is very simple, many of the NPC in many games use looks alike movesets to do this same thing, what he will do is making a combo of Fake out followed by U-Turn. In most cases Fake out will be able to take more than half of the health of the enemy while also disrupthing him, if the U-turn didn't finish on the next turn, you'll be able to sent the next pokémon based on the enemy you are facing acording to finish him of. So This moveset is more usefull when sending Ambipom first and after any of your pokémons has been defeated.
Item: Silk scarf
EV spent in attack and speed
Fake out (Maim move)
U-Turn (Following move to complete combo)
To fill this role he only need this two moves, the other two spaces could be almost any move, but in case you really want to make good use of the two last slots, moves for self coverage, backup or moves of different types to cover the weakness of your teamates can add very well too. In most cases moves like Thunder punch, ice punch, brick break, seed bomb, last resort and more.
(Important nothing, choosing natures that doesn't increase attack will have a bad impact here since is incredible important that the move fake out take at least half of the health of the foe. It only work effectively with natures that increase attack)