@name12345: Shenron isn't omnipotent though.
There isn't an omnipotent in DBZ at all.
He had clear limitations on what people could and could not do with the Dragon Balls.
Wrong! those limitations are for humans only... infact they tricked him once to do something they could not.
Whatever think what you want, if you like to be illogical that's your problem.
I mean...I'm sorry you think Shenron is omnipotent, they made it pretty clear he wasn't.