i would go with zoroark. the illusion may come in handy if you have throh in the back. And cuz its ma fav poke.
Zoroark (timid/modest) @focus sash
Ev spread: 252 sp.attack, 252 speed, rest on sp.def
Night Daze/Dark Pulse (night daze has 40% chance to lower accuarcy, both STAB)
Focus miss (aka blast)/Extrasensory (Extrasensory for fighting, focus miss is just overall powerful)
Flamethrower (why not?, coverage for bug)
Shadow ball/nasty plot (both good moves)