What is the best moveset for Landorus, Thundurus, and Tornadus?

Found answers for all three Pokemon. Asked first for Landorus. Out of all of the answers given, this was the most positively voted for. It said: Avoid Pokemon near the water.

Here are the moves.

Landorus:

Earthquake
Stone Edge/Brick Break- he said it helps with ice types, which can be quite annoying.
Sandstorm- apparently it activates Landorus' ability, which is Sand Force. It raises the power of Ground types, Rock types, and Steel type moves, while the sandstorm is in effect.
Swords Dance-helps with raising the stats a bit, obviously.

Here it is for Thundurus.

Thundurus:

Focus Blast-helps finish off the opponent quickly.
Nasty Plot
Thunderbolt-a useful move, that can easily paralyze the enemy.
Thunder Wave/Dark Pulse-useful ways to cripple Pokemon, like he said.

He also said that Volt Change can be useful on Thundurus, to prevent him from being harmed.

Here it is for Tornadus. Answered by a different person this time.

Tornadus:
Acrobatics- does a lot of damage, especially when no item is being held. Tornadus already has high attack, as I found out, so this is quite a useful move, and can sometimes score 1-hit KOs.
Hammer Arm- increases attack even more! With the cost of speed. Don't worry, I have the solution for the speed problem!
Agility- helps with the speed problem after Hammer Arm! You'll still be up to speed! (No pun intended)
Brick Break-useful for standing up to Ice types.

Hope this helps, and PM me if you have any questions.