When testing the spoteffects/drown hack I noticed that draining myself
with Stormbringer (toss up, get hit on head) while in iron golem form gave
messages about it drawing or draining life. (I'm sure that this has come
up before....) I've altered the artifact hit message rather than making
golems become resistant, although the opposite approach seems at least as
valid. The drain life spell uses different wording and isn't affected.