Granted, you're imbued with Dark Matter. (if you get the reference you get a very cookie)
I wish Luigi's Mansion and Luigi's Mansion: Dark Moon were so popular that every other person in the world had a GameCube, a 3DS, and a copy of each of them.
I wish for world peace, world justice, no more global warming, no more world hunger, and that the world and everybody/everything ever on it was invincible to everything (except dying of old age).