Landorus-T to S Rank on Flying
I think that Lando-t does so many roles so well on flying that it can't be ignored and left in A rank. Its defensive typing allows for neutrality to rock and an immunity to electric helping a lot vs Victini's bolt strikes and Terrakion's Stone Edges. Intimidate and access to u-turn makes it the perfect pivot. Lando usually is scarfed or defensive, but a double dance set is also somewhat popular. Intimidate helps wall mons like terrakion, even on the less bulky sets.
Landorus-Therian @ Choice Scarf
Ability: Intimidate
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- U-turn
- Rock Slide/Stone Edge
- Earthquake
- Knock Off/Superpower
-1 252 Atk Terrakion Stone Edge vs. 0 HP / 0 Def Landorus-T: 118-141 (36.9 - 44.2%) -- guaranteed 3HKO
Also, this:
-1 252 Atk Victini V-create vs. 0 HP / 0 Def Landorus-T: 178-211 (55.7 - 66.1%) -- guaranteed 2HKO
Scarf landorus still lives a -1 V-Create, and either outspeeds and ohkos next turn or forces a switch.
Landorus-Therian @ Rocky Helmet/Leftovers
Ability: Intimidate
EVs: 252 HP / 252 Def / 8 SpD
Impish Nature
- Earthquake
- U-turn
- Stone Edge/Rock Slide/Knock Off
- Stealth Rock
Running rocks on a bulky lando allows skarmory to run spikes instead of stealth rocks, and it's neutral to fire, the only skarm weakness that isn't covered by the electric immunity. Skarmory in turn provides a neutrality to water and ice, landorus's only weaknesses.
Landorus-Therian (M) @ Leftovers
Ability: Intimidate
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Earthquake
- Stone Edge
- Rock Polish
- Swords Dance
+2 Speed with adamant allows it to outspeed scarf base 120s
which you'll never see and dishes out more damage. This set helps tremendously against rock, which gives flying a hard time otherwise. Cradily is basically setup bait because it hardly touches lando, and after both dances it can solo rock.
+2 252+ Atk Landorus-T Earthquake vs. 252 HP / 0 Def Cradily: 399-469 (106.1 - 124.7%) -- guaranteed OHKO
Double Dance Landorus-T can also set up a Rock Polish on Mega Diancie, and sweep from there.
Refer to the scarf Victini calc, it can also set up on it after Lando Intimidates it, then can solo fire. It can also obviously set up on a Kyurem-Black locked into Fusion Bolt, either SD or RP depending on what you think they'll switch into, and sweep from there. This set helps particularly well with these two types.
In conclusion, I think that the options Landorus-Therian offers to flying are too much to pass up and it should be moved to S rank.