Blizzard sorc is great for masoleum.
Forget the pits...mf in the ancient tunnels and Maggot lair in act two...very few immunes.
I did chaos and baal with my blizzard sorc too...works fine with a proper merc (eth insight, treachery, Andy's or substitute).
After a bad experience with meteorb I stick with blizzard until I find a Jah and a ber...and then it's hammer time.