National Dex National dex -- kinda annoying

[thelaborist]

Team peaked at 20-4. I feel like a lot of it was just pretty good luck and predictions.

Kartana @ Rose Incense
Ability: Beast Boost
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Leaf Blade
- Knock Off
- Smart Strike
- Sacred Sword

Kartana is usually my mid game sweeper, but also functions as my anti-fairy, anti-poison switch in. Kartana hits like a freight train, but can't take a hit worth anything. The Rose Incense was just to boost the STAB leaf blade, because the few things I tried didn't seem to make a difference. I use a muscle band sometimes, for a tiny boost to all the physical attacks. 10% or 20% BP isn't a huge difference but beast boost helps that. Leftovers didn't stand up well, because K can't take special hits very well and doesn't stick around long enough to recover. Tried salac berry, same thing ... any suggestions on a better held item are appreciated! For now I usually just rely on good speed and beast boost to start handing out OHKOs.

Ribombee @ Wide Lens
Ability: Honey Gather
EVs: 248 HP / 8 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Sticky Web
- Defog
- Moonblast
- Stun Spore

Adorable little pain in the ass starter. Sticky web for obvious reasons, as my main ass kickers rely on their speed to do so (gengar and kartana). This helps me ensure they'll get to drop a bomb on somebody at least once. Defog as my only hazard defense. Moonblast for a decent STAB fairy attack and SpA lower-er; Stun spore to help me handle threats that want to set up on the Bee. It's no haze, but it is nice to half the speed and throw in the chance of a wasted turn. Bee is pretty quick so I usually always get something off. The wide lens is to help stun spore hit since bee can't take much abuse.

Gengar @ Ghostium Z
Ability: Cursed Body
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Shadow Ball
- Sludge Wave
- Energy Ball
- Thunderbolt

Pretty sure this one doesn't need much explanation. Another pseudo glass cannon. Speed usually ensures he gets to drop a bomb. Ghostium for never-ending-nightmare, a nice 160 bp stab ghost. Seems like people don't expect it and it can do some real damage. I had an expert belt on him because of the decent coverage, but I find that his SpA is pretty good as is and I like having the nuke option with NEN. I had dazzling gleam instead of t-bolt but I found that t-bolt helps me deal with more things. Idk, maybe just anecdotal?

Tyranitar-Mega @ Tyranitarite
Ability: Sand Stream
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance
- Earthquake
- Crunch
- Stone Edge

This is the most expendable person on the team. It's been Mega Diancie, Mega TTar and Mega Gyarados. Diancie I actually liked the best, STAB rock and fairy was a fun combo but I found that she died too easy. Mega TTar seems to survive a little longer with some decent defense. If he gets a DD off, he also becomes quite a beast. With Sticky web and a DD, he's a lot of fun. But again, I'm not committed to him and wouldn't mind suggestions for another mega.

Slowbro @ Leftovers
Ability: Oblivious
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Scald
- Ice Beam
- Flamethrower
- Thunder Wave

I've loved this guy from gen 1. Slowbro is always shocking in the amount of punishment he can handle, with a pretty impressive SpA to return fire. Scald, Ice Beam and Flamethrower haven't let me down yet. Ferrothorn is always surprised -- never fails it switches in on a scald, and then flamethrower drops him. I had him more support focused which is why I had "oblivious." Would it be better to give him some healing abilities and regenerator? I'm not necessarily in love with T-wave either, but it's nice to annoy pokemon and helps having a second stunner if I don't get sticky web up or end up having to defog it.

Ferrothorn @ Rocky Helmet
Ability: Iron Barbs
EVs: 248 HP / 8 Atk / 252 SpD
Careful Nature
- Leech Seed
- Body Press
- Power Whip
- Iron Defense

My aggressive "tank." Obvious good typing and defense stats allow him to take several hits as is. Iron defense for the defense boost/longevity, as well as the increased power with Body Press. Power whip for STAB power against waters and grounds. Leech seed because it's annoying and some recovery. RH + Iron barbs + Iron defense = death to physical pokemon trying to kill this guy.


It's a pretty fun team to play with. I guess mostly hyper offensive, since even my two traditional tanks are built more around dealing damage than taking/healing it. Any suggestions are welcome! Especially a better Mega that syncs with the team... not really sure if there's a good one though!

 

[Steorra]

well I feel like you should've taken a more hyper offense build to this team, walls in ferro and slowbro with webs just doesnt seem right, kartana could hit very heavy with band and webs supporting its speed stat against certain mons,
the ribombee should become shield dust to avoid flinch from fake out, i would personally rather sash on it for guaranteed webs but if you seem to want to hit stun spores more then you could do wide lens, also dont entirely agree with defog as your using webs and want them to stay up, i think skill swap could be better for magic bounce mons so you could get the web up,
gengar under webs that also be cool, but I think focus blast should definitely be ran over energy ball for something like ttar, I also think you could pick nasty plot over thunderbolt for z to really sting anything,
also you can put a bisharp over ferro in case someone wants to defog, they would have to face the fury of bisharp with black glasses,
I think the team could be better with mega gyara over ttar with sub, ddance crunch and earthquake, I like it as a more offensive threat, unless you see some noteable pros with ttar over gyara that I'm missing
replacing slowbro with blace to feast off volc could also be good, seeing it goes ham otherwise, in specific a speed boosting calm mind set

some thoughts i had on the team, they may not all be 100% beneficial but if you see something noteable to change don't hesitate to ask or make the change

 

[thelaborist]

well I feel like you should've taken a more hyper offense build to this team, walls in ferro and slowbro with webs just doesnt seem right, kartana could hit very heavy with band and webs supporting its speed stat against certain mons,
the ribombee should become shield dust to avoid flinch from fake out, i would personally rather sash on it for guaranteed webs but if you seem to want to hit stun spores more then you could do wide lens, also dont entirely agree with defog as your using webs and want them to stay up, i think skill swap could be better for magic bounce mons so you could get the web up,
gengar under webs that also be cool, but I think focus blast should definitely be ran over energy ball for something like ttar, I also think you could pick nasty plot over thunderbolt for z to really sting anything,
also you can put a bisharp over ferro in case someone wants to defog, they would have to face the fury of bisharp with black glasses,
I think the team could be better with mega gyara over ttar with sub, ddance crunch and earthquake, I like it as a more offensive threat, unless you see some noteable pros with ttar over gyara that I'm missing
replacing slowbro with blace to feast off volc could also be good, seeing it goes ham otherwise, in specific a speed boosting calm mind set

some thoughts i had on the team, they may not all be 100% beneficial but if you see something noteable to change don't hesitate to ask or make the change

Thanks for the advice. I put a sash on ribombee and switched defog for light screen and stun spore for reflect. Bee usually doesn't survive to get off all 3, but almost always a web and one of the two which I pick based on the opponents team. Mega gyarados has been working out decently. I tried swapping for blace but didn't really find him to be a good fit. Switched back to slowbro and changed t-wave for toxic since slowbro lives even longer with reflect/LS up. So far so good!

 

[theotherguytm]

Thanks for the advice. I put a sash on ribombee and switched defog for light screen and stun spore for reflect. Bee usually doesn't survive to get off all 3, but almost always a web and one of the two which I pick based on the opponents team. Mega gyarados has been working out decently. I tried swapping for blace but didn't really find him to be a good fit. Switched back to slowbro and changed t-wave for toxic since slowbro lives even longer with reflect/LS up. So far so good!

You really don't want a frail mon to be setting screens and Webs. Ribombee is meant to be the fastest user of Sticky Web, and that's about it. If you want a Web setter than does more than throw down webs and para something, Smeargle, Shuckle and Araquanid each have their pros and cons. But in terms of getting Webs up fast then getting something in, Ribombee. It should certainly be Sash with Shield Dust, but I recommend Hidden Power Fire over Defog and Skill Swap. Why?
252 SpA Ribombee Hidden Power Fire vs. 248 HP / 0 SpD Scizor-Mega: 212-252 (61.8 - 73.4%) -- guaranteed 2HKO
252 SpA Ribombee Hidden Power Fire vs. 0 HP / 4 SpD Kartana: 504-596 (194.5 - 230.1%) -- guaranteed OHKO
That's why. Two Pokemon that tend give Webs teams issues, nailed with ease. This, along with its speed, is the main draw to using Ribombee over other Webs setters: it actually poses a threat. You can even run Quiver Dance over Stun Spore to take this to the next level, but I think Stun Spore is a better choice here.
Read more here:
https://www.smogon.com/dex/sm/pokemon/ribombee/ou/
(BTW, if you want Screens, you probably need a second lead for that, but Webs+Screens is not a combo that works especially well.)
As for the rest of the team...

You need a Kartana item?
Kartana @ Normalium Z/Darkinum Z
Ability: Beast Boost
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Swords Dance
- Leaf Blade
- Sacred Sword
- Giga Impact/Knock Off
Boom. +2 Kartana with a Z-move is nigh-unstoppable with Webs up. The normal approach of "sac and revenge kill" simply doesn't work because Webs stop revenge killing from anything not airborn, and saccing things only makes Kartana stronger. Keep in mind a Metagross that hasn't Mega Evolved can ignore Webs with Clear Body and Mega Evolve to outspeed and revenge kill if it has Hammer Arm. So choosing the right moment to go for a Kartana clean is crucial (keep in mind you can alternatively use Kartana to blow holes for other sweepers too.)

Gengar is a pretty good choice for a Webs team with its speed, coverage and power, as well as spinblocking (a trait that frankly sounds better than it is because Excadrill is the only relevant spinner). But since Kart is holding our Z-Crystal Gengar needs a facelift.
Gengar @ Life Orb
Ability: Cursed Body
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Nasty Plot
- Shadow Ball
- Sludge Wave
- Thunderbolt
Nasty Plot is the primary reason for using Gengar in a Nat Dex OU team, and it gives it the power to slaughter the tier's walls. Thunderbolt is kept here for its ability to hit the mighty Toxapex and other bulky Waters, but Focus Miss is an option too. Life Orb lets Gengar hit absurdly hard at +2 in return for longevity, but Gengar isn't likely to survive many hits anyway. Black Sludge is an option for it you feel Gengar is dying too fast.

As for your Mega issue, I think Mega Gyarados could be a great option for the team as well. But if you really want to go crazy...
Charizard-Mega-X @ Charizardite X
Ability: Tough Claws
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Dragon Dance/Swords Dance
- Dragon Claw
- Flare Blitz/Flame Charge
- Earthquake
It's only possible to get away with running Swords Dance Zard X on Webs, but wow does it hit hard. Unfortunately, Choice Scarf Hydreigon is everywhere right now, so Dragon Dance is a much better option to ensure it cannot revenge kill you. 3 Attacks is the way to go here, no need for longevity, just maximum destruction. If you really want SD, then Flame Charge over Flare Blitz can keep you from being revenge killed as long as you can set it up. You can also run Roost over Dragon Claw to deal with Flare Blitz recoil on the Dragon Dance set.

Right, to echo what is said above: Ferrothorn and Slowbro need to go. The whole point of Ribombee is to throw down Webs then die, so if the opponent can get rid of the Webs you're in deep trouble. Both Ferrothorn and Slowbro are very passive, so the opponent has no issues clearing Webs in their face. Instead, let's add a couple of Webs favorites.
Bisharp @ Black Glasses
Ability: Defiant
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Knock Off
- Sucker Punch
- Iron Head
- Swords Dance
Bisharp is usually the first name on the teamsheet for a Webs player, and with very good reason. Its Defiant ability gives it a free Swords Dance it the opponent dares use Defog while it is on the field. The threat of Bisharp switching in on a Defog and simply blasting through a team is enough to deter Defog from some teams, and you should attempt to switch Bisharp into Defoggers that can't hurt it (non-Focus Blast Torn-T, for instance) to punish them. Swords Dance lets Bisharp "manually" increase its Attack to break holes, and Knock Off is its primary attack. Crippling opponents, especially those with Heavy-Duty-Boots that otherwise ignore Webs, is invaluable. Sucker Punch lets Bisharp bypass its bad speed, and check dangerous boosted sweepers (though be wary of the mind games this entails). Black Glasses is the preferred item, letting Bisharp hit nearly as hard as Life Orb without the drawback. Iron Head not being boosted by it is fine since its main targets are Fairies, who get smashed at +2 anyway.

Finally, your team has no Rocks. Let's fix that.
Landorus-Therian @ Focus Sash
Ability: Intimidate
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Stealth Rock
- Earthquake
- Explosion
- Swords Dance
Swords Dance suicide lead Lando-T is a great example of why Lando-T is the king of role compression. A functional breaker as well as a suicide lead, with Intimidate to let it check physical attackers as a last resort, possibly to turn them into setup fodder for something else (in addition to all the boons of its typing). After Ribombee has done its thing (or sometimes before it it gives you a better lead matchup, eg: Excadrill leads), unless there's a compelling reason not to (such as the opponent threating to Defog or Spin), send in Lando-T and get up the Rocks. Going boom right away isn't always the correct choice, sometimes a bit of improvised breaking with Swords Dance and Earthquake is called for (and +2 Explosion is hilarious), or it might be more accurate to save it for later in the battle, to set Rocks again or break later. Anyway, this set has a massive amount of role compression, just be sure to time the boom right to get maximum value. Or just go Rocks Boom get killing.

Brief threatlist:
Mega Lopunny-If you see Lopunny in Team Preview, keep Webs up at all costs or you just lose. Ribombee has a 68% chance to KO it with Moonblast as long as its Sash is intact in an emergency. Otherwise it just cleans house.
Mega Metagross-Having Clear Body in its base form allows it to ignore Webs one time as it comes in. Its nutty bulk and firepower, together with its high speed tier, makes it impossible for offensive teams to deal with without saccing mons if it comes in freely. Keep up the offensive pressure so it doesn't come in cheaply, and use boosted Zard X to outspeed and kill it if it refuses to switch out. Once it gets forced out and is subject to Webs it is much less of an issue, and most of the team can 1v1 it.
Tornadus-T-ATM it seems the entire tier is going through a "wait what are this thing's checks again?" phase. If you get the chance, go boom in its face with Lando-T. Keep an eye out for signs it might be Fightinum Z (no other obvious Z-move user, takes a Knock Off and keeps its item, you suspect it might have Focus Blast).
Dragapult-Especially if it is the rare Clear Body, Dragon Dance Z move Dragapult is a nightmare for offensive teams to handle. Bisharp forces it into mind games (though beware the common Substitute sets) and Ribombee can deal with it 1v1. Keep Ribombee alive with Sash intact so it can force Dragapult to use Phantom Force or its Z move to damage it, which Bisharp should handle. If it's Clear Body and able to keep a Sub up... Probably time for another game.

Best of luck!