I think the scarf set is also very viable, Fire- Blast dents a lot of the steel types in the meta, U-Turn gives huge momentum, Draco Meteor hurts like a mother, and Dark Pulse is extremely strong (I think Specs is the strongest in the meta? Not sure ...) and with the steel- nerf, it is as spammable as last gen if not more (Dammit fairy types).Hydreigon's main issue is that it's literally countered by every single relevant Fairy-type in OU. Yes it can hurt them with Flash Cannon but it would rather use other moves to hurt other important Pokemon.
Other than that, though, Specs Hydreigon has a very spammable and strong Dark Pulse. And Specs Draco Meteor hurts shit hard. It can OHKO Heatran and Tyranitar with Earth Power and Focus Blast, respectively, and it has good coverage with Fire Blast. On top of all that, it has access to u-turn, making it a pretty neat momentum gainer since it forces lots of switches, so pairing it with a Pokemon such as Bisharp or other hard-hitting Steel types can help a lot in taking down fairies or the pink blobs. Specs Latios can also be a pretty good teammate as they both have similar counters, and Latios can hurt/cripple said counters hard with Specs Psyshock and Trick. The Hydra also has Levitate, giving it another immunity alongside Psychic. Another issue it suffers from though is its speed tier. While it's not the slowest Pokemon around, it's still not fast enough. In a metagame where 100 speed is considered average, 97 (or is it 98? i forgot) is below average. But that doesn't stop it from wallbreaking at all.
Roost + 3 Attacks can also wallbreak and hurt things, but Specs's power is just too much to ignore.
I would say B+ or B at worst would be suitable for the Hydra.
It has 98 speed, but what really shines for Hydriegon is his wallbreaking ability, superpower + Draco Meteor can wallbreak a lot of walls with LO, Dark Pulse + Fire Blast add to the wallbreaking ability, after having -1/-1/-2 you have to switch, but it's, sometimes, very worth losing momentum.
4 Atk Life Orb Hydreigon Superpower vs. 252 HP / 252+ Def Eviolite Chansey: 309-367 (43.8 - 52.1%) -- 14.1% chance to 2HKO
4 Atk Life Orb Hydreigon Superpower vs. 252 HP / 252+ Def Blissey: 426-502 (59.6 - 70.3%) -- guaranteed 2HKO after Leftovers recovery
252+ SpA Life Orb Hydreigon Dark Pulse vs. 252 HP / 4 SpD Aegislash-Shield: 257-304 (79.3 - 93.8%) -- guaranteed 2HKO after Leftovers recovery
252+ SpA Life Orb Hydreigon Earth Power vs. 252 HP / 252+ SpD Heatran: 380-447 (98.4 - 115.8%) -- 81.3% chance to OHKO
252+ SpA Life Orb Hydreigon Dark Pulse vs. 252 HP / 252+ SpD Deoxys-D: 187-221 (61.5 - 72.6%) -- guaranteed 2HKO
252+ SpA Life Orb Hydreigon Draco Meteor vs. 252 HP / 0 SpD Rotom-W: 278-329 (91.4 - 108.2%) -- 50% chance to OHKO
252+ SpA Life Orb Hydreigon Draco Meteor vs. 252 HP / 4 SpD Mega Venusaur: 251-296 (68.9 - 81.3%) -- guaranteed 2HKO
252+ SpA Life Orb Hydreigon Dark Pulse vs. 252 HP / 4 SpD Mega Venusaur: 153-183 (42 - 50.2%) -- 1.2% chance to 2HKO
Other than Chansey (Mega Venusaur will die to Dark Pulse + Draco Meteor, Draco Meteor + Superpower has a good chance to KO Blissey) , Hydreigon can 2HKO most of the walls, and of course Ferrothorn, Scizor, and Skarmory, will get OHKO-ed by LO Fire Blast (LO doesn't even matter really)
Hydreigon does indeed have 4MSS, but it's a very good wallbreaker that is very versatile.
Agreeing on B rank for Hydreigon.
I also want to support Gliscor for at least A-.I have to agree with this. Toxic stall is an underestimated, and in the current meta, oft unprepared for strategy that can cripple whole teams at a time. Steel types are not as prevalent (aside the somewhat common excadrill, and the stall team's skarmory, and scizor) so toxic is more harmful, and with a physical leaning meta game, gliscor's physical bulk is even more appreciated.
Certainly deserves to be A or A- alongside hippowdon.
As for Zapdos, I'm interested in how viable it will be now that mega lucario is gone.
Just off the top of my head I can see it being a great counter to pinsir, talonflame, and to a certain extent, aegislash.
However it has a bit of 4MSS. It needs thunderbolt and heat wave for coverage, but appreciates status moves like Defog, roost, protect, and toxic.
I've recently started using Zapdos and have found nothing disappointing but nothing to make it stand out.
252+ Atk Choice Band Talonflame Flare Blitz vs. 244 HP / 208+ Def Gliscor: 150-177 (42.6 - 50.2%) -- guaranteed 3HKO after Poison Heal
First of all, I run 244 HP / 208+ Def / 56 Spe, as you only need 56 speed EVs to outspeed Adamant max speed Bisharp.
For Talonflame, first you Knock off, then you protect, that's half of the damage Talonflame inflicted is gone, then use Toxic, then protect, and Talonflame will eventually die from recoil and toxic. And that is Adamant CB talonflame gentlemen.
Gliscor also loves hitting the likes of Gengar, Rotom-W, Flying- type, Lati@s, w/ Knock off on the switch in. Knock off is GREAT utility AND decent damage from a Gliscor.
Unlike last gen, Gliscor can actually do something to Skarmory, Knock off, which is very crippling on a wall like him, same with Ferrothorn and many other steel- types.
Toxistall is very very good, I use Gliscor on ~90% of my teams and it so good.
While some will disagree with this, Gliscor is versatile, Ice fang and Fire Fang will surprise the likes of Ferrothorn, Scizor, Landorus-T, Gliscor, Garchomp, etc. As the latter 4 like to come in on Gliscor (especially Mega Scizor w/ Roost, because it can tank EQ like it's nothing), and SD Garchomp will come a LOT of times on Gliscor.
I'm very experienced with Gliscor, definitely A-.
Let me rephrase this:Ferrothorn in A-. The loss of the ghost and dark resistances dont affect him that much. He gained a resistance to fairy and still has premier resistances to water,electric and rock mooves. Also he is a spore absorber very usefull for the team overall. I think he isnt a or a+ because the rain nerf and that loss of resistances. Anyway its the second option for a wall (rotom-w is first sure) and a force which every team should consider using it. EDIT: lol rotom-w is a tank or a wall? I am new here in smogon sorri for the mistakes.
Ferrothron did lose the resistance to Dark- and Ghost-, but the very useful new resistance of Fairy- is very good, alongside the resistance of Water-, Steel-, Dragon-, and Rock-, is even more amazing, not to mention the resistance of electric which means it's tanking Volt switches, and Rotom-W specifically.
All Rotom-W can do to a ferrothorn is burn, while you can Leech Seed, set up rocks, and even Spikes.
Becoming the 2nd best spore/Sleep powder-abosrber pokemon in the metagame, not to mention the 2nd best wall immune to that, and one of the most amazing stall pokemons.
Ferrothorn also blocks Mega Venusaurs that do not carry HP Fire (or EQ to an extenet) since it is immune to Sludge Bomb, Sleep Powder, and Leech Seed, plus 4 times resistant to Giga Drain. Even though it can do nothing back to Mega Venusaur.
+2 252 Atk Aerilate Mega Pinsir Return vs. 252 HP / 252+ Def Ferrothorn: 295-348 (83.8 - 98.8%) -- guaranteed 2HKO
252+ Atk Life Orb Aegislash-Shield Sacred Sword vs. 252 HP / 252+ Def Ferrothorn: 94-112 (26.7 - 31.8%) -- guaranteed 4HKO
252+ SpA Life Orb Aegislash-Shield Shadow Ball vs. 252 HP / 0 SpD Ferrothorn: 91-109 (25.8 - 30.9%) -- guaranteed 4HKO
252+ Atk Life Orb Bisharp Knock Off (97.5 BP) vs. 252 HP / 252+ Def Ferrothorn: 133-156 (37.7 - 44.3%) -- guaranteed 3HKO after Leftovers recovery
252+ Atk Mega Tyranitar Crunch vs. 252 HP / 252+ Def Ferrothorn: 102-121 (28.9 - 34.3%) -- 99.6% chance to 4HKO after Leftovers recovery
252+ Atk Landorus-T Earthquake vs. 252 HP / 252+ Def Ferrothorn: 117-138 (33.2 - 39.2%) -- 9.6% chance to 3HKO after Leftovers recovery
252 SpA Life Orb Protean Greninja Ice Beam vs. 252 HP / 0 SpD Ferrothorn: 144-172 (40.9 - 48.8%) -- guaranteed 3HKO after Leftovers recovery
252+ Atk Mega Scizor U-turn vs. 252 HP / 252+ Def Ferrothorn: 84-99 (23.8 - 28.1%) -- possible 5HKO after Leftovers recovery
Kyurem-B: Ice Beam 25.5 - 30.1%
Fire Blast / Flamethrower -lacking Garchomp/Mega Garchomp also get walled.
Ferrothorn checks so many things, and while counters fewer things, it still counters a lot.
Definitely A-