After Torinn finishes his shift, he pays one final visit to the Arcanimus. There he seeks out Elayne and presents the weapon that he received for work on the caravan and says, "I wish to take advantage of the offer you gave and trade this in, and buy a fair amount of residuum on top of that."
With that concluded, he meets up with everyone else at the Helm and Cloak, having worked up a fair appetite from going on patrol. When the opportunity presents itself, he pulls out a small satchel of residuum powder and the Vigilant Blade he had enchanted before, asking of Sariel, "I know you've been busy doing this all day, but could you do one last enchantment for me? I'd like a stronger weapon that can weaken my enemies so they won't cause us as much trouble." On top of that, he pays a small tip in the form of a few arcana reagents.
Trade in Farbond Spellblade for 520gp in residuum
Purchase 440gp of residuum (462 gold)
Ask Sariel to enchant Vigiliant Blade into Sacrificial Weapon +2, hand over 960gp of residuum plus 50 gp in arcana reagents