- "A black blindfold appeared over Phineas Nigellus' clever, dark eyes, causing him to bump into the frame and shriek with pain."
Obscuro is the incantation of a Transfiguration spell used to conjure a blindfold over the eyes of the victim, therefore obstructing their view of their surroundings.
Hermione Granger used this spell in September of 1997 to prevent the portrait of Phineas Nigellus Black from viewing the location of her, Ron Weasley and Harry Potter in the Forest of Dean.
The incantation is Latin for "dark" or "conceal".
Behind the scenes
This spell might only affect characters in paintings; there are no other references to this spell.
Notes and references