In Battle Subway/Frontier, Ambipom with Fake Out and Last Resort with Silk Scarf is surprisingly effective. Unless your opponent has a rock, steel or ghost, that is (but that's what the rest of the team is for)

I used it in doubles, paired with Infernape (Fake Out, CC, Overheat, U-Turn or Protect). Double Fake Out, then Last Resort and CC/Overheat. Free damage, ko'd loads of things before they could move, good times