4chan:
Kings soul is in the bird.
Viren looks an awful lot like original dark mage guy.
me:
Dark magic doesn't seem all that dark yet really. just harvesting animal parts.. little difference from farming. Claudia's claim of wasp thorax being useful, makes it clear, its not souls, or lifeforce or anything...just magical essence in animal parts.
The box probably can point out to such useful parts. that it was in a drawer with keys is also important. probably IS a key itself. key to the mirror?
The box also pointed to Rayla. Elves can be harvested for something.
Claudia's mission already failed. and with Callum becoming an elemental mage. She makes a direct counterpart to him.
If the two kids find the Princes and join him, the story ends more or less. So in order to continue, things must go bad. She also already stated the dragon egg was a weapon of mass destruction. I suspect she will see the dragon, and try to kill it. Soren may side with the princes, and defend them. I think he will likely die doing this. Claudia will accidentally kill her brother. And, this will make her go full dark mage, and antagonist. Making a total mirror for Callum's journey.