Possible Misunderstanding:
It's possible you're thinking of a different move or a different game. Could you clarify what you're looking for?
* Are you looking for a Dragon-type move in Pokémon Colosseum? If so, there are other moves available like Dragon Pulse, Outrage, and Draco Meteor.
* Are you thinking of a different Pokémon game? Dragon Claw is available in many games, but not in Pokémon Colosseum.
Let me know if you have any other questions!