On conformation that Goodra gets Curse, I thought of an old but still cool set idea:
Curselax 2.0 (Call me bold? I'm actually very Careful)
Goodra@Leftovers
Careful Nature
EVs: 252 Hp 252SDef 4Atk/Def (Play with them how you will, I am unsure what the best spread is for this)
Ability: Sap Sipper
Dragon Tail/Outrage
Earthquake/Aqua Tail
Curse
Rest
Arguably one of the best ways to make this thing all physical, IMO. Sap Sipper>Gooey since you are too slow to really benefit from it (and it makes sure Breloom and Amoonguss can't interrupt your boosting). Outrage is your strongest physical move (thought the lock-in is annoying), but Dragon Tail makes you able to double as a bulky phazer (and the negative priority is an afterthought with curse). EQ and Aqua Tail are for coverage (I prefer EQ since it makes Aegislash easier to handle). Curse is your boosting move and Rest is your only form of recovery (but Goodra has the bulk to wait 2 turns and loves the status removal).
Usage:
Ideally you use it as a counter to stall pokes, since with Rest the worst thing most walls can do is phase you out (and I believe Roar/WW fail if you don't go second). Beyond that, this is possibly one of the best counters to Ferrothorn in existence, as you are immune to Leech Seed and Power Whip, and Curse makes Gyro Ball worthless (even if it crits). Aqua Tail and EQ make it an effective anti-FWG poke (with the right support). You could try Aqua Tail with Hydration-Rest, but I honestly prefer EQ + Sap Sipper.
Also, you never set up with it unless you can either a) punch a massive hole in your opponent or b) can sweep. That is to say, never hesitate to get a boost or two on a free switch or to scare something out (like a Ferrothorn or Breloom).
Checks/Counters:
If you do not have EQ, then Aegislash is a huge pain in the Arceus. King's Shield removes the attack boosts you get (if it is well timed) and Sacred Sword ignores your defense boosts--be ESPECIALLY careful when you are locked into Outrage and/or the Sword gets an SD or two off.
Fairies--not as big of a deal as you might think, though still dangerous. Azumarril hurts but is manageable after enough curses. Sylveon however, is probably your biggest fear since you cannot phase it and it can Calm Mind in your face all it wants (but again, an EQ can potentially destroy it if you boost enough) on top of it all, it can shrug off status support with Heal Bell. Togekiss is irritating since it walls you completely and can Air Slash flinch you to death.
Skarmory--can phase you out and is overall a real nuisance, but that is all it can do. If you have EQ, it cannot roost as effectively (if at all).
Dragons--mostly the physical ones, but they can smash you before you can hit back with Outrages/Draco Meteors.
You are countered by whatever your moveset limits you to. Dragon/Water leaves you open to Aegislash while Dragon/Ground leaves you open to Togekiss.
Teammates:
1) Fairy killers--biggest "DUH" with this thing, you need something to remove or incapacitate Fairies to use this. Scizor (regular or Mega) comes to mind as an excellent choice since a Bullet Punch can easily obliterate most fairies Banded or after an SD (and it doesn't care about Togekiss's paraflinch BS). Goodra also can phase out one of Scizor's biggest counters--Volcarona (I doubt a Bug Buzz will 2HKO a Specially Defensive Goodra, even after +1). Steel types in general are excellent partners since they love the white blob's ability to handle Fire types while Goodra likes the fairy-killing. Another perfect choice is Mega Gengar, it can trap and kill fairies with Sludge Bomb, Skarmory with TBolt/Shadow Ball, and Dragons with Dazzling Gleam. Not to mention, Goodra handles Blissey and Ferrothorn for Gengar--just be careful of Aegislash, as it can wipe out both if you are careless (and don't carry EQ).
2) Hazards--I don't really need to say much, but rocks at least to hinder Togekiss (especially if you are using DTail + EQ) and break Skarm's Sturdy. TSpikes help with Sylveon (if it doesn't have heal bell). Some good Spikers are Greninja (who has Ice Beam for Togekiss and Dark Pulse for Aegislash) and Klefki (with the sword-killing Foul Play).
3) Pivot receivers--Pardon my awkward wording, but this is something like Scizor or Sub Gengar that likes having a free turn to set up. Goodra's bulk makes this easy to do, and you can even use DTail to force in something and get your free switch.
Final Notes:
This has potential to be, as the name indicates, the next Curselax-level poke (not as meta-defining, but still very potent), but you NEVER boost blindly with it. It isn't something you can throw into a team and expect it to work, IMO, but with the right support, it's a freaking monster. However, it is also an effective pivot with proper prediction and can be an excellent phazer as well.
Long? Yes, but I admit I really like this set, and its potential.
EDIT: Also wanted to mention that a mixed Curse set is useable, but I find it inferior (since the second physical move is for hitting fairies with boosted hits). Really, it is up to your preference.
