Originally Posted by
Ikuryo
I think the in comic Gaseous Form has shown the gas-person to basically be immune to physical attacks and I remember it being mentioned in the forums by posters that it was probably a house-rule.
We have not seen what happens to a gaseous form when it is hit by a magic spell though, so it is possible that Greg will go gaseous and then get taken out by a magic missile or fireball or something.
Without the house-rule it would have been suicide to go gaseous while in melee range of a high level fighter. Roy should have diced his gas up to non-living(? dead unliving gaseous thing?) vapors in 1-2 rounds tops.