While cool on the info dump on Aaravos and cool on the rebellion ending (haha) and cool on the redemption (they seriously could have found an injured soldier),
That still would've required Viren or (worse, from Viren's perspective) Soren to commit murder. Remember that Dark magic needs
life to function; the heart would have to be alive when the spell is cast.
If all the components were there, why bother going through all of everything to begin with? Didn't Viren have everything already? What was the point of everything of it could have been cast at the start? Hex, Vixen would have been more susceptible with the sob story since he's a father.
The components
weren't all there; they needed the Pearl, which Team Zym managed to keep secure until the attack on Katolis. Callum was too resisting to be a reliable pawn; it was probably all Aaravos could do to confuse him about the decoy.
The original plan probably
was to use Viren, but then he died and became uncooperative (
sooo hard to get good help these days). The only thing post-timeskip Viren was good for was being leverage for Claudia.
Claudia was single-mindedly focused on her own father; she wouldn't have been fully committed to helping Aaravos until after she'd lost everything (so Aaravos helped her "save" her father, probably knowing full well that he would eventually die anyway).
