Created by Fradd Huggels, the archmage of the Black land four hundred years ago, in order to close the rift between the 'talented' and 'non-talented'. This Rune makes its possessor and surrounding materials impervious to magic by consuming all that enters within it's barriers, thus preventing the possessor from casting any spell but protecting them at the same time. The character itself could not work alone, in order to activate it the possessor needed to perform complex rituals.
This was possibly the greatest invention in the magic world, but it was not without it's enemies. Many 'talented' people had grown used to having their power and did not want to relinquish it. They killed Fradd, removed the rune and the manuals of its creation from existence. Or atleast they thought so, for Fradd was not without his secrets.