Ephyon

I noticed, or rather remembered another thing during my last playthrough that may benefit from some tweaking: Shadows. At some point in the game (I think after seeing your death in the alley), you already are supposed to know Shadows are coming to kill you and that they STILL hunt you... even when you never see any of them again. I actually went through the whole game without ever seeing any more than the ones in Ravel's Maze and the Fortress. Since they are supposed to be hunting for you, wouldn't it make sense for their random spawn rate to be a little higher?

This is EXTREMELY superficial, but I thought I'd bring it up anyway. I just went through the Fortress and finished the game and I noticed that in the scene when Dak'kon gets mobbed by the Shadows, he's wielding the Kinstealer. I actually had the Streaming Blade on it's strongest form, but I think this used to happen in the vanilla game anyway. The blade is back to its correct color on his corpse in the roof.

It's really just a small visual inconsistency.

Also, behold one of the most useless reports ever: There was a typo in one of your added quests, pretty sure it was the Deionarra's Truth quest. Except I don't remember where. I THINK it MIGHT have been while talking to Kesai-Serris, and it could POSSIBLY be a case of two letters being there when there should have been one. PERHAPS it could have been a double "t".

Or not.

While not a bug, there's something odd about the two Abishai that I never encountered before: I can't talk to them with either Annah or Grace in my party. Yes, this happened before as well, but usually just sending them to stand in a corner far away solved this. I can't tell if any change has been made on the two fiends because of the quest, but now the two will still complain about the girls no matter where I put them, I need to get out of the bar and kick them out of the party before they'll talk to me. I though this was odd, especially when I talked to the Githerai engineer in the foundry and noticing that having Grace stand a bit back (far closer than with the two fiends) still served to have her spill everything about the weapon.

In the abscence of everything else, taking the P&P version into consideration is a sensible thing to do

Yes, but this lack of evidence isn't because the information available is lacking, it's all there, it's you who's discussing something you have never seen.

'Stable weapon' is a term that means nothing. Considering it an artifact, due to what Dak'kon and the Practical Incarnation say is valid and well within the parameters of the rules in which PS:T is based. Thinking it's not, possibly depending on its several versions, is also valid.

What you're talking about is a completely new kind of item that doesn't even exist in the game and effects that just don't exist either.

The rules of D&D are overruled by the game's, and the game quite outright flips the book the finger on a good number of occasions. You're talking about what the spell MIGHT do if the game MIGHT have had a completely different set of rules and the Karach blade MIGHT have been a wholly different class of item. It... isn't. The shield just neutralizes spells. I'm not sure why on earth anyone would even think of thinking of this any further than that.

You've... never actually seen the spell, have you? D&D manuals have as much influence on PS:T's magic system as logic has on BG2's timeline, that's kind of obvious if you've played the game at least once. It's useless to get so attached to it in a game that takes it as a list of suggestions rather than rules. The Karach blade can't be dispelled, it's treated as a stable weapon, it's just silly to even consider it.