What goes around comes around!
Landorus-Therian (M) @ Weakness Policy
EVs: 252 Atk / 4 SpD / 252 Spe
- Rock Polish
- Swords Dance
- Stone Edge
Dual-Dance is an old classic, but this can still work in the current metagame, as it is able to break past many threats with its enormous base attack of 145 and its great typing in ground and flying. While it doesn't face many weaknesses, it still gets aimed by plenty of Water- and Ice-types. However, this set can function on Screen-support given by Regieleki, Tapu Koko, or Alola-Ninetales, so it has a better day on the battlefield.
This set contains Rock Polish and Swords Dance, as its 2 Setup moves of choice, Rock Polish is to help out Lando-T with its speed stat, whereas Swords Dance helps it out to have more breaking power. When Lando-T uses Rock Polish and an opposing Pokemon comes in to attack it and hits it with a super effective attack, it gets on top of that a Weakness Policy-boost, which helps Lando-T a lot, so it gains an attack-boost by 2 stages, which is basically a Swords Dance-boost. Lando-T turns into a very deadly sweeper and it can decide to Swords Dance or to Rock Polish again later at a very comfortable position in the game.
Furthermore, it has Stone Edge to hit Flying-types such as Zapdos, Tornadus-T, Pelipper, Moltres, and Corviknight, while it is also able to hit levitating Pokemon like Latios, Latias, and Hydreigon with Stone Edge as well. The last slot is its STAB move in Earthquake, which hits extremely hard after a Swords Dance-boost and it can claim a lot of OHKOes on many non-grounded Pokemon with Earthquake.
In overall, this set functions well on Screens-support and aims to claim kills in the mid-game or late-game and with an Swords Dance-boost it can net plenty of Pokemon with an OHKO and due to Rock Polish, its first move in the set, it can outspeed plenty of faster, dangerous threats to it such as Choice Scarf Kartana and Jolly Excadrill in sand stream.