They dont need mask to get immune to death fog, they are immune on it from the start. The game itself is NOT in shape most common RPG`s and that is prolly what confuses most people. Lots of people adapted only one shape of creatures for RPG`s "orcs are stupid and undeads are evil, elfs are good, dwarfs have beard, humans are good or poor with one who is main bad guy"
They just cant accept different shapes of different RPG universes with different rules.
