Harry was just thinking that all he needed was for Dumbledore's pet bird to die while he was all alone in the office with it, when the bird burst into flames.
J. K. RowlingBut I donโt think Iโve ever known such a natural at Potions!โ said Slughorn. โInstinctive, you know โ like his mother! Iโve only ever taught a few with this kind of ability, I can tell you that, Sybill โ why even Severus โโ And to Harryโs horror, Slughorn threw out an arm and seemed to scoop Snape out of thin air toward them.
J. K. Rowling