I think my post was pretty clear on why Ghost-Curse was not a good idea.
How much HP do opposing Pokemon lose during Curse? Also what's a Stalk Pokemon? For the set, I can see where it could work, especially on Milotic, who gets high Def/Sp.Def from status. It won't be able to keep Recovering and/or Resting enough to be able to stay alive.
Toxic alone kills Milotic if it stays in. If it switches out, Toxic stays, Curse does not. Curse's risk here >>>>>> Curse's payoff
Still it would seem a lot better with Seismic Toss/Night Shade to help beat things faster. Also being Taunted, like Thorns said, will force a switch unless it can Toss/Shade them.
I agree that it needs some kind of attacking move, but Taunt isn't what I'd be most afraid of - because if you're being Taunted it is either Tyranitar or Gyarados doing so, both of which kick Dusclops' butt quick enough even if you have a damaging move.
This set could be great for some Pokes if it's counters are taken care of. Everything has a counter. Just naming a few and saying the set sucks is basically saying every single Pokemon sucks.
However, you cannot disagree when I say that having a bunchload of counters is worse than having less counters, which in turn is worse than not having counters at all. There are indeed Pokemon that cannot be countered by definition because they have the ability to hit everything hard (some Choice Banders). And this Dusclops has a bunch of counters, not just Taunters. I could name them, but you would be saying "hm you are just naming counters I told you that's not good", I could compare them to other Pokemon's amount of counters, but I'd love to hear your definition of a good Pokemon first.
Not everything has Taunt, and those Taunters can be countered. Not with this set of a Dusclops.
Actually, the problem is anything that doesn't mind being Toxiced outright that can do >50% damage to Dusclops within two turns.
The original poster just named one Pokemon in a team, so keep that in mind. Still I would rather use Wisp, like Aero says. There are quite a few common Steel Types: Metagross, Skarmory, Forretress and Scizor. Scizor, I haven't seen much of. Will-o-Wisp still is great for those Slaking. Just switch into a Return/Body Slam and Wisp it(if it doesn't switch).
The only reason Slaking would not switch out is if it's being controled by an incompetent player, because it cannot do anything - it is locked into that unaffecting move. Unless it is not Choice Banded, in which case it is a failure as well, except this time it failed before the battle started.
Also the Dusclops IMO should have (+Sp.Def / -Att) Nature since Normal / Fighting will not hit it. Gives more things it can go against.
Actually, that is arguable. I like my Dusclops to be able to switch into physical moves it is not practically immune to.