
Originally Posted by
loco1234
Biggest thing I can see is that it's better to work in multiples of 4 for the EVs. Instead of 255/255, go 252/252/4. The extra 1 point can be game-changing, believe it or not.
To be honest though, Rock is a really easy type to deal with.... Nearly every team carries something Grass-type and usually has a Water-type with Ice moves to boot. You'd do well to try and shore up those weaknesses. I've found that with a Monotype team (as this would be, regardless of tier) it's a really good idea to pick your Pokemon so that their secondary types shore up their shared type's weaknesses, as well as each other's. Pure types are of course usable, but you don't want too many per team.
Since you're using this for a Rock gym, I'd recommend a Sandstorm team centering around Tyranitar. Rock-types get an extra boost from the sand in the form of 1.5x SpD, so your team'll be somewhat bulkier Specially, although many Rocks have pitiful SpD to begin with. I'd use a lineup of something like:
Tyranitar / Cradily / Terrakion / Aerodactyl / Rhyperior / Omastar
I haven't gotten around to Mono-Rock yet, so this is pretty much brainstorming, but some sets I'd recommend:
Tyranitar @ Leftovers
Trait: Sand Stream
Quiet Nature (+SpA, -Spe)
EVs: 252 HP / 252 SpA / 4 SpD
- Substitute
- Dark Pulse
- Fire Blast
- Ice Beam
This is a Tyranitar set I kinda just made up. I know T-Tar is more physically-inclined, but its SpA peaks at a nice 317, which is certainly usable. The reason it's Special is because Rock HAS no decent Special attackers outside Tyranitar and Omastar. And having 1 leaves you at the mercy of physical walls. Anyway, 101-subs are achieved with 252 HP EVs so Chansey and Blissey aren't breaking them with Seismic Toss. Dark Pulse does barely more than Crunch on this set, but barely more is still more. It's your STAB move and Ghost killer. Fire Blast is for Steels and Ice Beam handles Dragons and Gliscor. Gliscor laughs at Rock's physical attackers, so Omastar and Tyranitar are pretty much necessary to beat it. Feel free to change this all you want, it's just a basis. I haven't used it myself so I can't claim it works.
Cradily @ Leftovers
Trait: Storm Drain
Bold Nature (+Def, -Atk)
EVs: 252 HP / 252 Def / 4 SpD
- Stealth Rock
- Toxic
- Recover
- Hidden Power Fire
Cradily is meh, but it does add a valuable Water immunity. Its defenses are respectable, but it has pitiful Spe. It's here more or less for the Water immunity, but it can take hits well with the Sandstorm boost and Recover. It's weak to common Ice moves though.
Terrakion @ Choice Scarf
Trait: Justified
Jolly Nature (+Spe, -SpA)
EVs: 4 HP / 252 Atk / 252 Spe
- Close Combat
- Earthquake
- X-Scissor
- Rock Slide
It's a pretty simple Scarfed revenge-killer, but Scarf Terrakion is a huge threat to be sure. There isn't much to explain here. Sorry, I get a bit lazy on descriptions when I'm rating xD
Archeops @ Flying Gem
Trait: Defeatist
Jolly Nature (+Spe, -SpA)
EVs: 252 Atk / 4 SpD / 252 Spe
- Acrobatics
- Earthquake
- Stone Edge
- U-Turn
I'm suggesting Archeops because you don't need Aero to set Rocks with that T-Tar set. It can't run LO because of Defeatist and I don't really like 2 Choice users with redundant coverage, so the Acrobatics set is about Archeops's only good one here. It's also very straightforward, with the Flying Gem boosting the first Acrobatics and doubling the base power of all subsequent Acrobatics, which also get STAB. EQ and Stone Edge get great coverage and U-Turn is for scouting and because Archeops and Head Smash is a bad idea. Come to think of it, Archeops might be pretty good in Hackmons... I'll have to try that.
Rhyperior @ Leftovers
Trait: Solid Rock
Adamant Nature (+Atk, -SpA)
EVs: 248 HP / 16 Atk / 244 SpD
- Earthquake
- Stone Edge
- Dragon Tail
- Megahorn
This is a standard Rhyperior in UU with one change - Megahorn over Rocks. You have T-Tar for Rocks, so you don't need them here. EQ and Stone Edge, again, exist for coverage. Dragon Tail phazes and racks up Rocks damae. Megahorn was pretty much the best filler option I could find. Rhyperior can actually be really bulky in the sand, even Specially. And Solid Rock helps too by softening super-effective hits a bit. They do 75% of what they would normally, so Grass and Water are 3x instead of 4x xD still, every bit helps.
Omastar @ Life Orb
Trait: Swift Swim
Modest Nature
EVs: 104 HP / 252 SpA / 152 Spe
- Shell Smash
- Hydro Pump
- Ice Beam
- Hidden Power Grass
It's a Shell Smash sweeper and also your Rain counter. Hydro Pump is really strong off doubled SpA with STAB in the rain, Ice Beam gets good coverage in OU and HP Grass deals with opposing bulky waters like Gastrodon.