You can also do the standard of damned thing with jade armour and sandals of the crane, your golem will teleport away from melee every turn and snipe from safety. This is useful against elite units that could otherwise kill the golem faster than it heals.
So what do you do if your opponents are immune to life drain? (Undead, high mr). Lightning resistance would keep him from getting killed by a mixed seasonal spirit/undead force, but I don't see how it'd do any damage.
Hmmm, starshine cap is +2 MR... better than nothing, I suppose, if I replace a misc with the ring for whichever seasonal spirit is causing me pain (air/cold/fire). 21MR isn't great, but should hold up against most AI mages.