“Whoa… a Sealing Designated mage… oh, but the designation was lifted, wasn’t it?”

“Yes, but she did something else, so she has been designated again.”

“That must make her the first mage in the Clock Tower to have a Sealing Designation twice.”

Sealing Designations— orders for mages whose abilities had been judged by the Clock Tower to be so singularly special they were to be forever preserved within its walls. Though it was the highest honor for a mage, preserved mages could not continue their research, so many chose to run from it.

The Adventures of Lord El-Melloi II, Volume 2, Chapter 1, Part 2