Aureola (アーリアル Āriaru), also known as the Supreme Light or the Pinnacle of Light, is one of eight Legendary Weapons of Elibe, and is the foremost Light Magic tome in Fire Emblem: Binding Blade and Fire Emblem: Rekka no Ken. Forged during The Scouring for use against Manaketes, the Aureola tome was first wielded by St. Elimine, followed by ArchsageAthos 980 years later. When cast, the heavens will open up and shine a single beam of light upon a selected enemy target, momentarily petrifying him/her in his/her tracks. A sparkle will then cascade down this beam of light, causing the beam of light to dissipate and combust, engulfing the selected enemy target in the process.
After the Scouring, Aureola was sealed within the confines a temple in Etruria by the Eight Heroes. The tome's seal is broken during the events of Rekka no Ken, where it is lifted from its resting place to be used against Nergal, whose immense immunity to normal weaponry is unrivalled by all. Upon achieving its intended purpose of aiding in the fight against Nergal, the Aureola tome is later returned to Etruria, where it is guarded by the Etrurian Church.
During the events of Binding Blade, Roy will successfully drive Bern's forces out of Etruria, whereupon he is entrusted with the Aureola tome for use against Idenn's Manaketes. After Idenn is felled by Roy's troops, the Aureola tome is presumably returned to Etruria to be protected from being used for nefarious purposes.
An aureola or aureole (diminutive of Latin aurea, "golden") is the radiance emitted by a luminous cloud. Such luminous clouds are often surround the bodies of sacred personages in religious paintings, causing them to appear as if they are exuding an ethereal aura. In the earliest periods of Christian art, this splendorous art technique was confined to the figures of the Christian Godhead, but was later extended to the Virgin Mary and to several other saints.