Aureola

Aureola is the name of one of the eight Divine Weapons, and is the foremost light magic. It was created during The Scouring for use against Manaketes. It was first used by St. Elimine, then 980 years after that, by the Archsage Athos in the events of Fire Emblem: The Blazing Sword.

After the scouring, Forblaze was sealed inside a temple in Etruria by the Eight Heroes. During the incident with Nergal, the seal was broken so that the magic might be used against Nergal, who had become mostly resistant to normal weaponry. After the incident, and the death of Athos, it was returned to Etruria, where the Etrurian Church guarded it until Roy drove out Bern from Etruria. At this point it passed into the hands of Roy's army for use against the Idoun's Manaketes. It is unknown what happened to Aureola afterwards.