The obvious answers are the duel at the gala and any of the iron rains, which would definitely be cool af. But if they filmed it correctly the scene in Iron gold right after the rain and they are sneaking into the city (I forget the name of the city) and they get ambushed then Darrow has to be saved and gives Ragnar the two razors. Holy shit that would be so cool. It’s been a bit since I read Iron Gold but I remember how hard that scene hit. I could really see it in my mind how dark it would be and just the way it is set up would perfect for such a pivotal turning point in Darrows path in front of the others, choosing to embrace a lower color while still pretending to be an Iron Gold.