You all are invited so say what you discovered in the game during your quests. I personally found a third regenerating ring, which is very usefull. I hate healing spells and rest only to heal. You now can equip 3 fighters with regenerating rings or use the accumulative effect. Like ring of Kangaxx + ring of regeneration. However you can steal it from Ribald in the adventures shop of wakkeens district. The soldate, who is watching there, has also sometimes a good lv 6 scroll. You can steal this quite at beginning, youll need a thief and mastery thief potions: they are accumulative too!

SOME SPOILERS
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I pickpocket at every opportunity and this meant I was able to buy/steal the more powerful items very early on. One item in particular I stole, no one else has mentioned as far as I am aware. If you pickpocket the djinn guarding outside the dao-djinn's tent in trademeet, you will receive a magic bottle which summons an efreet. Very nice. Also, as I have mentioned before, you can upgrade the horn of valhalla twice, first with a diamond and then a berjuril. You must take them to the merchant below the Art shop in Waukeen's promenade. The final upgrade summons a level 9 Beserker.