That would be a horrible way to end the quest. "Siarak stood up to cast his spell. Then lightning struck and the whole party was electrocuted." XD
By the way, quick question. What do you have to do to get a gnosis mark? I know it needs to be a moderated thread and you need to ask a staff member, but is there anyone in particular you need to ask...etc? (I'm thinking of having Satevis try for Yahal's mark.)
I thinking it being fire off at a safe distance though not close to the boat.
Though what I had in mind was a god he already has some history with (Yahal, and he was Benshira), and deep faith is a big part of Satevis's character, so if he were to get any mark in the future, I kind of think that one would fit him best.