Figure in Gray

After taking Harry's blood as his own, Voldemort captures Harry and discovers the scar Horcrux. When he executes a time-based ritual to excise the soul fragment from Harry without destroying it, Voldemort inadvertently enables his own downfall. Messing with time is ill-advised, and could very well come back to kill you. Takes place prior to OOTP. Blood & Ritual magic, Time travel.