Hey everyone, I found it! The perfect Illusion for Zoroark and it's Gengar. Gengar is immune to Fighting, resistant to Fairy and doubly resistant to Bug, so those moves will probably not even dare to threaten Zoroark. On top of that, Zoroark is resistant to Dark and Ghost that will try to take down Gengar and immune to Psychic which will try to do the same. Also, Gengar's immune to Normal and Ground (because of Levitate) so Zoroark won't be seeing Earthquake or Giga Impact anytime soon. One more thing is, they have similar stats and movesets so you can really mess up anyone you battle with frightening and confusing (literally) mind games. Now, how about we just ask Zoroark what his movset is?
"I'm a Gengar, not a Zoroark. Really! Kehkehkeh...
EVs are 252 Special Attack, 252 Speed, and 4 HP.
I'm rather Rash in Nature. That's + Special Attack, and - Special Defense.
My Ability is Levitate! Honest! Kehkehkeh...
I like to hold the BrightPowder.
Night Daze, and
One more note: I'm a Gengar. You know, maybe."
...Never trust a Dark -Type. Just saying. Anyway, Shadow Ball is to convince the opponent Zoroark is a real Gengar. Swagger is for Confusion, letting you Double Team without having to worry. By that time, the chances of you getting hit is pretty low. But remember, this is an evil Dark-Type so it will also lower your accuracy as well with a powerful STAB Night Daze. Like I said, it's evil.Muahaha...