Be more specific. What legendaries do you seek? I have everything in Black, and many have been cloned into Kalos, but I don't generally use them.
I've also imported my own Shiny Nincada (many clones LOL), a Shiny Kricketot, and an event Shiny Larvitar. I'm planning to even clone N's Pokémon in the future, as well as a pair of Shiny Audino back there.