I played my brother's Black version behind his back so I could catch Tornadus (I also caught a Tyrogue on his game for the heck of it). I had to paralyze it before I finally caught it after almost an hour. I then traded it over to my White version, where I painstakingly traveled to the Abundant Shrine. Along the way, I caught a Buizel, which I wanted to catch, and named her Misty because I couldn't think of anything else. Once I got to the Shrine and saved, I battled Landorus, though it didn't take long to weaken him, and I caught him on the third Ultra Ball. I finally then traded my brother's Tornadus back, so it almost doesn't look like anything happened.
I say "almost" because his Liepard now knows Thunder Wave.