☆Brenthunder (ブレンサンダ Burensanda, arbitrarily renamed "Mjolnir" in the fan translation) is a Thunder Magic spell that appears exclusively in TearRing Saga: Utna Heroes Saga. The personal spell of Alicia, ☆Brenthunder summons consecutive tercet-bolts of lightning from the heavens when cast, which will then be directed to mercilessly strike a selected enemy target. It functions like a Brave weapon.