[Mod] Black Blade

Hello fellow adventurers,
I've just recently given a try to modding for a kit which I intend to give to a NPC in BG2EE, and would like your input on it.
So, I still have found no descriptions, yet, here are the advantages and disadvantages:

Black Blade (well D'oh, it's the name of the topic)

Advantages:
- +1 to max Dexterity
- May become specialized in any bladed weapon that a thief can use (**)
- Gain 1% Magic Resistance each level and 2% more every 3 levels (maximum of 50% at level 30)
- Cumulative Miscast magic on succesful hit for 5% (10% at level 20)
- May put 3 points in two weapon style.
- Can cast Dissipate Magic once per day every 5 levels starting from level 5.
- Thac0 progrss in between fighter and thief values
- +1 to saving throws at level 1,10 and 20

Disadvantages:
- Can not use any magic items other than Weapons and Armor
- Can not use any ranged weapons
- Can only use bladed weapons
- Backstab only reaches x4 (at level 9)
- Can not distribute thieving skills(Each levels, thieving skills automatically sets Hiding in shadow, Moving silently and Detect Illusions at set values)
- Can not dual class
- Can not be of lawful or chaotic alignment
- -2 to strength and -1 to constitution~

So as you may have noticed, this kit is basically a Wizard Slayer/Thief, but as a thief kit.

Of course here is the basic draft for the kit (with HLAs not yet implemented, but I tried to make them for the upcoming game like the greedy dungeon plunderer I am, I couldn't stop myself from trying to)