I have White, but I've only played it a couple times. I prefer HeartGold. =P
I'm interested in your Darkrai, Arceus, and Shaymin.
I have a few legendary shinies I can offer:
Level 70 Mewtwo (Untouched)
Level 50 Moltres (Untouched)
Level 50 Kyogre (Untouched)
Level 30 Deoxys (Untouched)
Level 50 Rayquaza (Untouched)
I also have a level 16 shiny Kadabra that will evolve into Alakazam if I trade it. I also have a Kings Rock that you're looking for.