Damn, Dundee, you're good. You're very good. [img]smile.gif[/img]

According to the Infinity Explorer, UMBHUL01, also known as Umber Hulk, is a level 6 creature, with 74 HP.
His Save Vs. Spells is 14, but Cloudkill will give him a -4 penalty, so he should have 10% to survive a Cloudkill.

Now, that makes me wonder why i've yet to see an Umber Hulk survives a Cloudkill in my games... Pure luck, maybe? Hmmmm... [img]graemlins/1ponder.gif[/img]

Here is my easy tactic of killing Umber Hulks it requires Yoshimo. Now on room two (Room next to Umber Hulks) and room one (First room you step once you go down the celler) set traps like all over room two at least two or one next to the door cause if you place all the traps all them will kill only one umber hulk. Now open the door and get a wiz or somethin shoot a fireball to soften em up and when they come chasing you quickly (Its good to have haste on the bait) run back to room 1 and slam the door shut and the umber hulks should come and you should hear ear splitting yells and stuff if you don't open the door let them see you and chase you once they got hit with all the traps charge and kill zem. But I suggest sending a thief in (non detected of course) to see how weak or strong the umber hulks are. If they are too strong lure them in one by one.

P.S. Never tried this so I am not 100 percent sure this would work

Umber Hulks are extremely susceptable to any kind of death magic.

Maybe because they have to roll their svaes each round or turn? So if an Umber Hulk is in the Cloudkill spell for say 2 rounds the chances of surviving in the could are (10% x 10% = 1%)? (My maths isn't so good).

Doesn't work that way. Once you made your save, you can stay in the cloud and just receive poison damage.