@JPAdriano0 I mean, you've got the gist of the most important stuff. Volcanica has been a dragonhusk for a long time (like Valgren when it was being controlled by Stride). It seems dragons become dragonhusks when their mind deteriorates over time or mental neglect, so since Volcanica was basically chilling with nothing to do for a long time, the loneliness might've impacted it.
Dragonhusks can be taken over by ppl either have a direct connection to it - like Clind, who is its dragonkin (basically Volcanica made Clind) or ppl like Al who know how to separate their self and inserted it into Volcanica. Btw, Clind actually possessed Volcanica in the past to kill Valgren during that incident 40 yrs ago, but he can't do it now bc Al alter is alr in there.
We also get Roswaal's multifold spell names - duet, trio, quartet, and quintet. Clind also has like different levels of 'seals' on his true power, and he's pretty damn strong. In short, they need to pierce the Heart Core, which is protected by the magical and physical defenses of Dragon Scales and Dragon Halo. Clind mentions the reverse scale (idk if u remember from Arc 6) where Reid managed to harm it as the key to bypassing the physical defense, while Roswaal has to use his magic to overpower the magical defense. Apparently Dragon Sword Reid can also just bypass both, but Reinhard's prob still stalling Satella rn so he can't do nothing.
and basically, not even Roswaal's Fivefold magic could do anything to Volcanica. Pretty sure he needs to use Sixfold - i mean, it did damage Puck back then. Also, Ezzo shows up last sec and i guess he has some trick.
Another thing abt dragonkin: they are inheritors of dragons’ memories, emotions, and traits, but not full dragons. also apparently volcanica has envy of humanity’s potential and growth.