Just Give Me A Reason

Based on The Modern Sorcerer's The Sorcerer Challenge: What happened to Aunt Marge was, without a doubt, one of the most-powerful forms of magic that Harry had ever used. Little does he know that there's a reason for that; one that is about to change his life forever! Dark Powerful-Sorcerer Harry; Harry/Pansy; Very OOC Characters; PoA AU; Possible XOver references;