"Bring forth your virgins and gold, for the dragons within demand it of thee."

The kingdom that later became Blackmyst worshiped dragons prior to it's unification. The Dragon Shrine was the core of this elemental religion in the region. Where great dragons slumbered, their needs tended by the shrine maidens who sang them to sleep.
When the curse was laid the gods were merciful, taking the souls from blackmyst and reincarnating them into the next cycle of the world. However strong souls and hordes of soulless shells remained behind. The Dragons bodies, being more tied to the cycle of divinity, were unable to withstand the cosmic shift, and their flesh was wrenched and exploded. The souls however would not leave, and found their vessel in the body of a shrine Maiden.

While she has the brain of a human she has four elemental dragon souls within her instead of her own, and not the force of will to keep them under control. She is Greedy and Vain, the worst traits of dragonkind, with power befiting it.
She rules the dragon shrine as her own mini-theocracy sending her minions out to raid and plunder the countryside for gold.
The water around the shrine is foul and toxic from the rotting carcasses of dragons, only in the main shrine is the water clear and clean, giving her the only source of drinkable water in the area. Giving her practical power as well.
She demands virgins to become her priests and priestesses in extange for clean water.

This all brings her into conflict with the Golden Monk, who rules the Golden Tower, the former home of the other major religious institution. She craves his wealth and power, while he desires the secrets of dragons immortality. The two Theocrats are unwilling to compromise of course, lest the other gain too much power. Causing a small holy war between their two factions of hollow minions.

She has high HP and armor from her draconian power, wields four archaic types of elemental spells Earth, Fire, Water, Air, and her sacrificial blade. She is meant as a Solo-Boss, to be fought with only two shrine maidens who heal and buff. the Shrine Maidens do not resist attackers, but try to avoid them.
Her most damaging attack is her breathweapon a chaotic musical cone of multiple types of elemental energy.

Her biggest weakness is her reliance on ONLY those four elements, and thus not being prepared for the various types of holy and arcane magic that has developed since then.