City Devourer (都喰らい Miyakokurai ) is a powerful Unrestricted Spell that is able to convert a large area directly into Power of Existence. A Seal can interfere with the operation of this spell, preventing it from being completed.
Background[]
The inventor of this spell, Asiz used it to convert the city of Osterode into Power of Existence required for fulfilling his "Grand Scheme" at the start of the Great War.
Another user of this spell, Friagne attempted to use it to turn Misaki City into Power of Existence so he could make the existence of his Rinne, Marianne, permanent.
Both users of this spell needed to create rigged Torches around the city before activating the spell, however Friagne's version is far more efficient thanks to the Treasure Tool, Dance Party. Whereas the City Devourer as utilized by Asiz required at least 10% of the city's population to be converted into rigged Torches, Friagne needed far less than that.