You Cant. I'm sorry but you need both games and 2 DS's to trade
No, they do not have to be the same level to get Landorus.
You need to trade it across, and catch Thundurus as well. Trade won't let you get Landorus.
You'll need to have Tornadus and Thundurus in your Party and go to Abundant Shrine, interact with it, and then Landorus will fly down to encounter you.
Once you catch Tornadus, and get Thundurus from a trade, then you can visit the shrine to make the third member of the trio, Landorus, appear.
The way you get Landorus is by getting Tornadus first. Then after you catch him, you have to catch Thundurus. You're only able to get Thundurus in Pokemon White and Tornadus in Pokemon Black so you can only get the other from a trade. After you have both of them in your party, go to the place where it says you need to go to get landorus (somewhere on the East side of the map up a waterfall or two). Go up to the little shrine and he will come down to you and then you can catch him.
no you cannot when tornadus and thunderus landorus gets mad the you have a chance to catch it
You catch Thundurus, but must trade Tornadus from Pokemon Black.
You must first catch Thundurus (Voltolos) in your white and have a black game with a Tornadus (Tornelos) and trade the tornadus to your white, visit abundant shrine, go to the shrine and Landorus will appear. He is at Level 70.
Tornado, Thundurus and Landorus cannot be found in Pokémon Black 2. You will need to use the Dream Radar application which is available on the Nintendo 3DS eShop in order to catch Tornadus, Thundurus and Landorus. Once you have found and caught them in the Dream Radar then you can send them over to your Pokémon Black 2 game.
If you're talking about the legendaries, the exclusive one to Pokemon White is Zekrom. You can also catch Kyurem(Giant Chasm), Cobalion (Mistralton Cave), Virizon(Pinwheel Forest), Terrakion (Victory Road), Thundurus (Stormy Route 7) and Landorus (Abundant Shrine).Note : You must have caught Tornadus from Pokemon Black and Thundurus from Pokemon White in order to get Landorus afterwards.
in white you have to you must trade for landorus (catch it in black) in white you can get thundurus by finding it (it moves check the eletric bullet boards
you both the games to do it.first have tornadous from black and thundorous from white then go to the aubandent shrine have the to pokemon in your party then talk to the shrine and you will battle landorus on pokemon white version!!hope i helped!If you have both Thundurus and Tornadus. When you get both of the ff. pokemon, go to the Giant Chasm and you can meet Landorus