Slayers Revolution

[Dark Dragon]

ok here is a few things about the Slayers universe that might helps make some sense.

The Lord of Nightmares is the ultimate being in the slayers universe who is neither good or evil.

The Lord of Nightmares created 4 worlds, each with it's own Demon and God so to speak.

Lina world is where Ruby-Eye Shabranigdo is the demon and the Flare Dragon Ceiphied is the God

Shabranigdo created 5 Demon Lords that served as his lieutenants. The only 3 that i can name are Demon Dragon Gaav, Hellmaster Phibrizzo and Greater Beast Zelas-Metallium.

now as for the spells, there are three branches of magic with consist of black, white and shamanic.

White and Shaman magic call upon the user own power in order to cast the spell.

Black magic however is something the Demon Lords give the humans in order to cause more chaos and destruction. Black magic spells call upon the power of the Demon race instead of the caster.

The Dragonslave for example call upon the power of Ruby-Eye Shabranigdo. So i guess to an extent it's base on how much of the Demon powers the user can harness which will determine the effectiveness of the spell.

The Giga Slave is special to Lina and i'm not really sure when and how she learned it. It call on the power of the Lord of Nightmares which seems to be the only thing that is capable of killing the Demon Lords. In Slayers Next Lina also manage to learn the Ragna Blade which is another spell that calls on the power of the Lord of Nightmares but only to a lesser extent making it less dangerous.

A lot of this was drawn from memory of the stuff i've read from light novels and the first few seasons so if there is anything wrong feel free to correct it.

On a side note: A lot of peoples are speculating that Zelas-Metallium is in the OP because there is one scene where you see Xellos with the lower body of a woman standing in the background and since Xellos serve as the priest for Zelas peoples are assuming that figure is Zelas.