One of the 27 True Runes!
A True Rune representing the power of lightning. The Lightning Rune and Thunder Rune are born from this rune. The rune was a treasure of a nation destroyed by Harmonia, but Geddoe escaped this nation with the True Rune. Later he lent his powers to the Flame Champion during the huge conflict in the Grasslands. He has sealed the powers of the True Lightning Rune ever since, but unsealed it during the 2nd Flame Champion War. The rune grants incredibly powerful offensive spells to its bearer.