Before the party leave the room, Revaethan finds another intact bottle.
"Looks like this is a Blade Wash for making a magic weapon. My swords are already magic, so I certainly don't need it..."
As the warriors make their way back to the vestibule, Tomas and Kelgar are able to, with their combined healing efforts focused on Throg, restore him to full health just as the journey reaches its destination. Dorgath splashes some of the fountain water on the green barrier. Immediately, the barrier visibly reacts, flickering and warping. The change persists, and it flickers a few times a second, but the barrier remains standing.