Can confirm Tornado is a 3'aero spell that deals with the deathfog very nicely.

Now for some REAL pro tips: You can't kill the bosses of Arx by throwing crates of death fog at them and suicide bombing. Rest in peace, Red Prince; your sacrifice was in vain. Leave those crates where you found them.

Trap Strats: DOS1:EE? Cheese - DOS2? Mashed potatoes - Proper nutrition is key to dungeon delving.