There is a factoid people arguing about juice seem to be missing here: Vanna was linked at the time.
We know she was linked to at least one person, and that person was using a very powerful thinkamancy artifact. Even assuming there's not a third caster involved (and I wouldn't be surprised if carnamancy had a hand in it, after everything), it's theoretical that an artifact thinkamancy link might give one more working juice within the link.
Vanna, however, had to channel all of it as the person on sight. I imagine spending more juice then your normally even capable of is quite exhausting, likely moreso from a remote link setup such as they had. It's plausible however, that Vanna would have some little amount of Juice in the aftermath of such a link.
I hold to the theory that it was three casters, all of whom already had to expend some juice in the various communications and the like, and in the end, after the remaining juice was distrubuted, everybody had a little left but not a lot, having expended what would amount to about two turns worth a juice from any one of them on the one last spell.
But either way (2 + artifact or 3 + artifact), there are many more explanations then "storing" or "borrowing" juice across turns, though I concede that if anybody could do something like that it'd probably be a turnanamcer.
Lamech wrote:I still think Caeser is just insane.
Only because to him the side's going nuts.
