"Falmouth Falcons versus Pride of Portree, eleven o’clock, Exmoor. An Invisibility Charm has been put upon new stadium. Please collect Re-Visibility Spectacles from ticket office or you will not be able to find the pitch."
-- Daily Prophet (DP)
Spell to make a person or thing invisible.
References from the canon
Cast on the new Quidditch stadium in Exmoor (DP).