[SixOfSpades]

I believe Bone Golems require +2 weapons, while Bone Fiends require +3. Not positive, though.

super_smasher, it's a good thing that you've got at least one +3 weapon, because you almost certainly will need it, and soon.

I highly doubt that Stoneskin stacks, but I could be wrong. It would also be a dangerous habit to get into: You could say, "Ha, ha, my Sorcerer is immune to physical damage," and wade into a melee. Four rounds later, you'll wonder what happened to all you layers of Stoneskin.

Stoneskin will only absorb physical damage. All non-physical spells (such as Magic Missile or Cone of Cold) will not be affected in the least. Spells such as Flame Arrow will have their physical damage blocked, but the Fire damage will still toast your ass. When hit with a weapon, Stoneskins will protect you from the damage of the weapon itself, but any additional enchantments (Slow, Stun, Poison, Acid damage, INT drain, etc) will penetrate right through it.