The Potion Master hesitated. His master believed that he would use the offered power for the greater good. No, not the "greater good'! For the welfare of every witch and wizard in Britain, or not at all. The question was, did he trust himself? Possession of the elder wand would make him stronger than even the Dark Lord. Yet, there was nothing magic could give him that his wand could not. The stone ... sooner or later, he would succumb to its power. Like the Dark Lord would succumb to the siren call of the Death Stick. But the wand ... no, Harry had faith in him. He would prove that justified. "Expelliarmus."