I'm quite excited for Zoroark, as I can see him being one of those pokemon whos uses change with the metagame itself - if a pokemon with a very similar moveset to him appears, but is of the poison or ghost typing, then illusion gets some great usage. I see that ability as more significant to him than his stats, which are already great in themselves.
I'm very glad that his Special Attack is the greater here, as the majority of ghosts are special attackers, providing him lots of disguises - Shadow Ball especially means he can pass himself off as a Ghost.
Substitute I can imagine being a superb move on Zoroark, allowing him to maintain his disguise longer, though on a lead it would look a bit suspicious, as would other moves the pokemon clearly does not have. Swagger and U-Turn also would allow the disguise to stay on for longer.
Here's a few ideas:
Zoroark @ Life Orb
4 HP / 252 SpA / 252 Spe
- Shadow Ball
- Focus Blast
- Dark Pulse / Hidden Power Psychic / Hidden Power Flying
This is obviously meant to take the opponent by surprise, as you're clearly using Gengar's moves. As stated before, Gengar is the perfect disguise - Dark resists Dark and Ghost, is immune to Psychic, and nobody is going to want to use Bug or Fighting moves on a Ghost. Gengar's Levitate also means the opponent will refrain from ground moves.
It's a shame Zoro doesn't get Energy Ball or Thunderbolt, as these would complete his disguise, however Focus Blast is a great move. Shadow Ball is there for disguise purposes, naturally - you may want to stick Dark Pulse on Zoroark in the case that your disguise has been removed, to get that STAB, as there really aren't many other moves that correspond with common Gengar sets. Flamethrower isn't on Gengar move either, but it does provide accurate coverage against steels and bugs. Hidden Power would be a great move to cover those Fighting and Bug types, but Psychic may be a better choice to get those Poison types, with Flamethrower covering Bug and Grass respectively.
Zorocune / Zorotic
Disguise: Suicune or Milotic
Zoroark @ Leftovers
- Calm Mind
- Dark Pulse
- Flamethower / Hidden Power Ground / Hidden Power Psychic / Hidden Powers Flying
The objective here would obviously be to feign a Bulky Water powering up, maybe forcing the opponent to switch or attack with a neutral damaging move. This is where Substitute gets some more usage, as it's not uncommon or unreasonable to see on such a pokemon, and keeps your disguise. Calm Mind is the move to use here, and then you have stab in the form of Dark Pulse. Flamethrower takes care of Grass pokemon that switch in, but they may not bother due to the threat of Ice Beam. Hidden Power Ground should be able to nail any electric types that switch in, and the other Hidden Powers are again there for post-disguise coverage. A lack of Ice Beam is a shame, though.
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Obviously, if common Zoro sets gained usage, people would start predicting differently, allowing you to run genuine Gengars and other ghosts with a bit of bluff (Gengar with Dark Pulse, for example, could get the opponent using the wrong moves). Another great use would be bringing in your actual pokemon, possibly with U-Turn, and then later on bringing Zoroark with its disguise, feigning a U-Turn - instead you hit with a completely unexpected move. This would especially work well with pokemon that have Regenerate as their ability and have at least 66% HP before switching out, as the HP wouldn't be a discerning factor anymre.
I think that style of play for Zoroark mid-game would certainly work better than obviously suspect ghost leads. In the case that Zoro MUST be a lead, you can switch him out instantly feigning a worthy opponent, or by disguising yourself as a U-Turner - in which case Choice Scarf could work well on Zoro.
But yeah, i'm interested to see what other ideas people come up with.