A Squib's Path to Revenge

Adopted from Phantomace13's story A Squib's Revenge. When Harry's twin sister Ivy, the Girl-Who-Lived, is on the verge of death or loss of magic after her defeat of Voldemort, it's decided to take Harry's magic and give it to her. Read as Harry, now as a squib, follows the path of darkness to achieve his revenge. Starts as Dark!Harry; Leads to VeryDark!Harry. Harry/Tracey/Astoria