So what I need now is just this: if Varrel stands down, or if you fight Varrel and remove the power of the crystal, how do you plan to get the allies and the elves to stop fighting?
Well, that's a tall order now isn't it. Once we get the cure, Dartis may have Silas cast Protection from Arrows (of he still has it) on him, and/or Dartis will activate his shield for both arrow catching and the Cha boost and head back out to a balcony if the tower has one if not, he will rush out (in full defense) to find the leaders, human, he will find Sassarius, and Cal, and Kyle. And Bermax and Phly, if he can find them, he can stop the fighting from their side. He will call out the cure is here, the cure is here, cease fighting, cese Fighting. Call=ing out name and title if need be Ordering the men to stand down and tell them the cure is here. We'll need to get the elves to stop, but once the men stop fighting and retreat a bit, Dartis will try to treat with them and explain things.
The goal will be to stop the fight then explain things, with NO blame. Dartis will emphasize that the orcs of the north still are a threat to dward, gnome, elf and Dorinthian alike. And they need to be united as one to face them.
To the Tallione, Dartis will be less cordial, but will warmly thank Commander Sassarius, and remind him that his homeland is in dire need of protection. Dartis will try to get a pledge for the Tallione to relinquish the cliam to all Dorinthian land, they will have a hard enough time holding onto Tallione land anyway.
But yes, Dartis is going to throw himself in front of the speeding train. (I had a flashback to Gandalf at the battle of the 5 armies). So Glass, whatever protections you can muster would be good for this martyr.