You get this:
![Image](http://i490.photobucket.com/albums/rr270/Xandirth/WoWScrnShot_091712_185751.jpg)
![Image](http://i490.photobucket.com/albums/rr270/Xandirth/WoWScrnShot_091712_184311.jpg)
Sorry for the lousy pictures, the dragons wouldn't stay alive long enough to get a good enough picture, but you get the general idea.
It doesn't work every time (sometimes they just despawn) but if they do get up there, they will stand in the air and fight until the target is dead, then reset back to you. Fun for everyone!