- "For a moment the kettle trembled, glowing with an odd blue light; then it quivered to rest, as solidly black as ever."
Portus is the incantation to a charm used to transform an ordinary object into a Portkey. Since creating Portkeys are restricted by the Ministry of Magic, the usage of this spell also requires permission. This was the subject of a question of the Theory of Charms O.W.L. in 1996
Immediately after casting, the target will glow bright blue, as the Portkey does when it is ready, but after a few seconds it will return to its normal colour.
- Harry Potter and the Goblet of Fire (First appearance)
- Harry Potter and the Order of the Phoenix (First identified as Portus)
- Harry Potter and the Order of the Phoenix (film) (Mentioned only)
- Harry Potter and the Deathly Hallows (Mentioned only)