So far I've seen a weapon with 3 empty charmslots and 4 enchantmentslots, but not more.
The weapons with an orange coloured title (like Razakel's Warhammer, the Brideblade, ...) I see by traders in Flames of Vengeance part (I go there when I was L34) and one I know is a 1-handed weapon, but L37 (and there're more, I'll take a look in my game fi you wish, just ask
),
you can find by Bedwyr (it's an enchanter too) & that weapon has also a very funny name :
"Good Day and Goodbye" (warhammer) with the skill Death Blow +3 ...
Bedwyr has also an Axe called "Axe of Titus" (L37) with Wirlwind skill +3
But other traders that sell weapons are Gina, Alzbeta, Nerk (have no special weapons - I mean with an orange coloured title), Mysus & Kaan. If you wish I look for more info about nice 1-handed weapons.
Since you're already L 29, have you go to the Ministry in Aleroth? There you can Mindread Deodantus and trade with him! He has a very nice Shield (Lion's Mane L30). The same NPC has also the Blade of Hypnerotomachia L33 with at least 2 charmslots, (but not sure, can be 3 slots), and 2 enchantmentslots, plus Wirlwind +2 & higher meleedam than magicdam.
The Archmage Armour Set has a Archmage Warhammer L26 with 2 charm and 2 enchantmentslots, meleedam is higher than magic damage. I like this Set, especially the Belt
.
I don't find many divine charms via loot, but I buy some by traders in FoV & btw Bedwyr has nice charms I experienced so far. I look EACH level at all traders to see what they've in stock (traders restock (But the orange coloured gear remain the same) if you level-up
I think there isn't a Unique weapon, no, there's more than that I think ... since the gear with an orange label are in fact unique and special because most of them have a Skillbonus!
I mostly use a bow or 2-handed sword, but don't need it that last much since playing a Priest. But I love to see my hero swinging the blade by using Thousant Strikes
... so yeah, I'm now thinking about buy a new 2-handed sword, but so far can't decide which one
... I'm still using the Sword of the Paladin .