Question

how do I get landorus? I have thundurus and tornadus but is there a move or a level they need get?

Answer 1

Nope, all you need to get landorus is to bring thundurus and tornadus(they both must be in your party) to the abundant shrine, and interact with the Shrine(press A on the Shrine). Landorus will then appear and you can battle him.

Comments

My answer is 20 times better. :P

---

Meh same thing basically

Answer 2

You must bring them both to the Abundant Shrine on Route 14. You get to the Shrine's area by Surfing and using Waterfall in the field. Interact with the Shrine, and Thundurus and Tornadus suddenly become fearful, because Landorus punished them once. Then Landorus will appear and attack.

Comments

I did that but landorus never appears

Answer 3

You have to use your caught Tornadus/Thundurus (depending on the version of the game) in your party next to a Thundurus/Tornadus. Landorus won't appear otherwise.

Also big tip: You can get Tornadus/Thundurus before the Elite 4. Landorus is only available after the Elite 4.
It's also best to get the Mystery Gift Smeargle in order to catch these legendary pokémon (Tornadus & Thundurus are roaming).