The Best-Laid Plans

Leo thought he'd know what to expect after getting reincarnated as Harry Potter. Except Harry Potter is now Lizzy Potter, Lizzy Potter is now Margie Dursley, and Voldemort knows something's not quite right with the Girl-Who-Lived. Throw in an unreliable wand, a shoddy memory of the books, and a tendency for half-baked plans and you have a recipe for disaster. SI OC.