The Mad Hatter@MelkorWorking on the celestial wizard magic section I came across some info you must know about
there actually are 2 more key types known, Black and Obsidian
Both are basically criminal or dark spirits
however the level of intensity differs, Obsidian ones have tried to kill the spirit king and are uncontrollable if they feel like it, they even have their constellation erased and are extremely dangerous.
The black ones at least once they are summoned have chains at their body that flow to their key, but act as normal spirits further, though they may try to get their shackles broken by the summoners command (they keys would likely remain black, but what happens afterwards is unknown to me about the freed prisoner, if it is temporal, only counts in human world, if they would rebel and rampage?????)(dont know about the Obsidian ones, only remark about their punishment is they are in the deepest part of the celestial world and have their constellation deleted, but I reckon they may have chains as well?)
anyway, Draco is under the list of Black keys
there actually are 2 more key types known, Black and Obsidian
Both are basically criminal or dark spirits
however the level of intensity differs, Obsidian ones have tried to kill the spirit king and are uncontrollable if they feel like it, they even have their constellation erased and are extremely dangerous.
The black ones at least once they are summoned have chains at their body that flow to their key, but act as normal spirits further, though they may try to get their shackles broken by the summoners command (they keys would likely remain black, but what happens afterwards is unknown to me about the freed prisoner, if it is temporal, only counts in human world, if they would rebel and rampage?????)(dont know about the Obsidian ones, only remark about their punishment is they are in the deepest part of the celestial world and have their constellation deleted, but I reckon they may have chains as well?)
anyway, Draco is under the list of Black keys