Analysis
hello Sobi, I like your idea of using a mega-Sableye balance, this pokemon is capable of working even outside the stall archetypes, making himself very useful in preventing hazards and to control certain Wallbreaker as Tornadus-t, gengar, and also some bulky sweepers set-up as Talonflame (using Toxic), Charizard X (this is a countermeasure for him), as we have seen, you have added 3 sweepers: that the role of eliminating bulky waters (Serperior), grounds as lando, steels (Garchomp), fairy and offensive teams (Bisharp); to help these sweeper you rightly putting klefki you added a fairy switch and speed control, also it provides a very good support with spikes, which can facilitate the sweep of your pokemon, like rotom-w in this team is a good momentum generator and also a good bird counter, finally you have chosen to put ThunderWave on it to further control threats like charizard x. After this brief analysis, we analyze the threats to this team:
Threat List
mega Heracross is a very powerful and dangerous Wallbreaker for your team, has the bulk and strength needed to eliminate your entire team in 1v1, combined with speed control users (klefki, Clefable, Thundurus) becomes very difficult to manage, at this time I think it is the best the best balance breaker, with on SD, substitute, also prevent status from Sableye and rotom-w, and using SD can become quite dangerous, because your team does not have a pokemon that inflicts to Heracross huge damage without boost (see Serperior), and I'm sure that bulky mega hera tank to +2 dragon claw from Garchomp.
Sd Bisharp is another dangerous threat, given the lack of tankchomp, it becomes quite difficult to control it, your very Bisharp is a bait for it, also failed due to the use of lum berry to easily increase the attack without danger of being burned new to rotom-w, lum berry + SD also becomes harmful to Sableye, your only play is to risk the flinch of iron head to burn it again and go Garchomp to kill him, his capacity to eliminate without much trouble fast threats like Serperior makes even more difficult your revenge kill, even klefki is a bait, to paralyze not recommend it highly, because it becomes completely a free switch to Sableye, and then begins to use SD as long as he wants lol.
Keldeo is a threat of excellence in the metagame ou, in the case of your team, specs and subCm are the most difficult versions to check, Keldeo with support hazard stacking, manages to become even more difficult to control, and having a single check (Serperior) and countermeasures with speed control, the burn they become very boring, you should also play many 50/50 to guess the move that will given the lack of a safe switch, sub cm is very boring as I said above, because it can prevent status, and has the possibility of increasing the SpA and hit hard sERP with Secret sword, Sableye is a bait for this set, it must be very careful play around, always trying to find Serperior front of Keldeo, without giving opportunity to keld to use substitute.
mega Lopunny is a great Wallbreaker that inflicts a lot of damage to all of your pokemon, also it becomes dangerous and unwieldy for the lack of tankchomp, your team countermeasures, such as speed control or the burn, that helps your pokemon in revenge kill it, but if lopunny has the right support, which puts pressure on klefki (for example specs Magnezone) becomes really difficult to have the victory in hand, even a healing wisher as a scarf or Latias jirachi give problems to your team, even the hazards help ensure the kill with hjk, I think is one of the most dangerous threats, because it usually has a infinite number of supports which might cause problems for your team.
both charizard mega forms cause problems to the team, charizard y is an incredible threat, you have countermeasures as sd Bisharp in revenge kill or paralysis with klefki also Garchomp is a hard check, but since your offensive Set take 2HKO the switch by fire blast, Moreover charizard y force many switches, weakening with hazard your only occasional switches, talking about sd Bisharp for revenge kill charizard Y, this is put under pressure by Keldeo (common partner of Char Y in sand + sun builds), which makes difficult Bisharp the revenge killing; takling about charizard X, we can say that it is even more difficult to control, because it is capable of DD in front of rotom-w, and even if you twave, charizard almost always has a healing wisher, or if we are in WoW DD set, we have a HealBeller as unaware Clefable for sure, in your team you have more countermeasures to charizard x, in fact speed control + offensive chomp eliminate charizard without too many problems, and the fact that these supporters for zard are very boring and tend to force switch as latios and Latias, but after all it is one of the threats that you can better manage, despite the dangerousness.
volcanion is a great and dangerous Wallbreaker, puts pressure on all members of your team, and your only play is to use Serp to beat it, but you always have to sacrifice some teammate to bring serprerior field, rotom falls after a burn steam eruption coming into range of this HydroScald after rocks, to beat him you have to try and place the hazard fastest possible, and try to put pressure latios (common teammate) using Bisharp and klefki, preventing use defog, or kill him to not re-use it ; talking about Volcarona, I think it's really hard to play against, is a threat less because of the rarity of seeing him, but if he runs lum berry and giga drain becomes really dangerous, beating your twave toxic and countermeasures, only sd Bisharp becomes the only chance to beat theoretically, seeing in battle, it is really hard to win the 50/50, 50/50 if predict that the game is practically lost, even for it, I recommend to test it and immediately put the rocks in the field, you can take good advantage sd Bisharp, since good teammate volc is mega Sableye, using SD force him to back away.
the other grass-type as Breloom and Serperior are quite annoying, they can boost their stats and quickly become very difficult to manage threats, Breloom manages to sleep pokemon lenses as klefki or Bisharp then use sd without too many problems and continue the swept using mach punch of Garchomp and serp, talking about Serperior, given the lack of prio become more manageable and paralyzing using Bisharp and Garchomp to kill him, these two threats love hazard support that helps Breloom to bring in Mach punch range Garchomp and Serperior.
Thundurus nasty plot is top threat for this team, easily able to use nasty plot and continue the sweep, also manages to survive a sucker punch from Bisharp and kill him, this weakness is due to the lack of a fast threat can revenge kill it, but if you play well Bisharp, placing the rocks, you should be able to handle it.
rain teams are difficult to manage, usually run a ground type or an electric type to prevent various Twave and Electric moves, then it becomes difficult for rotom and klefki paralyze sweeper as Kingdra, that pretty much does a round kill if played correctly, playing board well Bisharp and rotom-w to prevent swampert mega-sweep and weaken abusers using sucker punch.
I concluded here, there are definitely other threats that I will have forgotten, sorry for the big post, but I wanted to make a nice post for this project, hope you got inspiration for the core you will have to post in the next step, good evening to all
