Does invisible work at all? My char is level 108 in magic, yet I can't hide from anyone it seems, not with improved invis, not with concealment.
The only rune I've used (except map provided once) is the rune of marking, to name the chests in the appartment. Only five chests and I can't remember what I put in the middle three of them...
The protection from cold spell is used a lot. I've only got 11 in "natural" protection from cold, so I usualy use it before I kill many chinese dragons and Jessies. Then I get 24. Not a whole lot, but much better than 11.
Nowdays at level 108/108/108, I use face of death or balls of lightning to kill everything. Those that don't die from that, dies from the Retribution of Ruggilli. What a crappy god Ruggilli was, for a monk, until I got face of death. I killed electric dragons with flaming aura to get to level 50 in wisdom, it took weeks, and then found face of death. It took me two days to get to 108 in wisdom. With face of death I could finally complete the Warrior proving ground before the maps were reset...