The Dark Lord's Golden Finger

Trapped, weakened, and burdened by the identity of the Wizarding World's most feared dark lord, a transmigrator wakes to find himself merged with Voldemort's remnant soul – and stuck in Quirrell's body. His only magic: a broken Legilimency. Dumbledore is watching. But a hidden \"Golden Finger\" emerges: The 'Darkest Hour' ability. When activated, it grants immense, destructive power, transforming him into the chillingly efficient villain everyone fears. This is his only path to survival. Now, he must play the part, strategically gathering power, and preparing for the inevitable clash with the \"Old Bee.\" But can he control the monstrous power he wields, or will the 'Darkest Hour' consume him entirely before Dumbledore ever gets the chance?