On the bright side ... im no longer sory ...
Now i just wonder why i even bothered apologizing ... do good to the devil, hell will be your reward ... i gues. :-/
Lets see then:
A robe with a unique design
So ... the inspiration that Larian was supposed to took from this "marvelous mod item" ... was to paint regular Sorcerer robe more red.
Noted.
A character imbuing a weapon
True ... animation is from Shillelagh ... my bad.
Anyway, cuting yourself is still allready in game, so the inspiration is ... ???
I gues we would never know.
Unique? O_o
Allow me to present you some other "AoE Bow attacks":
https://baldursgate3.wiki.fextralife.com/Arrow+of+Acidhttps://baldursgate3.wiki.fextralife.com/Arrow+of+Lightninghttps://baldursgate3.wiki.fextralife.com/Arrow+of+Firehttps://baldursgate3.wiki.fextralife.com/Arrow+of+IceVS equip some boots to dash with them so you can collect charges that allow you to use a special attack with your bow.
Its funny that when you have nothing to say, you randomly pick up completely different item, nobody was talking about, just to have something to complain about.

Now ...
Lets return to comparing Bow to Bow.
https://baldursgate3.wiki.fextralife.com/The+JoltshooterI shall even quote the important part for you:
Electric Blood: When the wielder deals damage using this weapon, they gain 2 Lightning Charges.
See?
No boots mentioned ... no boots needed ... what a surprise. :-/
Really ... was it even worth making up that nonsence, when we all have proof that it was nonsence so easily reachable? :-/
Not really sure what your goal was, if you never used the item and dont know what it does ... you could just say it. :-/
Then he's asking for "lore/role play" explanations but he's in love with the helmet that allow you to move faster but only when combat begin!
Again ... you are making stuff ...
I mean, its kinda funny to observe you arguing with yourself, but what is the point?
Then he imagine stupid builds to "prove" how overpowered are those items even if he know that everyone already agreed on that.
Im not really sure if i would call equipping two weapons on Dual Wielding Fighter "a build".

But i noticed that you ignored my question ... let me repeat it:
Since you dont want people to use scrolls as they want ... bcs scrolls provide magical powers that anybody can use without any limits (except they are on one use) ... how are staves (or any item actualy) that provide exactly same magical powers, ACTUALLY without any limits (since they have unlimited usage) ... any better?Then he's asking why an item who's effect could be written in the DMG look "more like DnD".
Anything can be written there, as long as WotC aprooves it ...
Still, you didnt answer the question ...
You are running in circle ... "it would be more like DnD bcs it would be written in DnD book" is basicaly just the same as "it would feel more like DnD, bcs it would feel more like DnD".
I shall presume there is no real reason at all. :-/
And this is just your personal way to say "i dont like it" ...
For the record ... you can just say that, there is no shame in having different taste. :-/
THREE weapons out of 42 that have unique attacks
only 1 that deal additionnal damages without conditions.
Challenge accepted!
So unique attacks:
https://baldursgate3.wiki.fextralife.com/Faithbreakerhttps://baldursgate3.wiki.fextralife.com/Very+Heavy+Greataxehttps://baldursgate3.wiki.fextralife.com/Skybreakerhttps://baldursgate3.wiki.fextralife.com/Staff+of+Crones (
This one would fit into next category "additional damage" without conditions aswell)
Not sure if i should count Tyr's protection as "unique attack" ... but i gues not, still why not just mention him without counting it?
https://baldursgate3.wiki.fextralife.com/Sword+of+JusticeAdditional damage without conditions:
https://baldursgate3.wiki.fextralife.com/Everburn+Bladehttps://baldursgate3.wiki.fextralife.com/Loviatar's+Scourgehttps://baldursgate3.wiki.fextralife.com/Nature's+Snare (
This is not really any condition ... just chance to proc.)
https://baldursgate3.wiki.fextralife.com/Sword+of+Screamshttps://baldursgate3.wiki.fextralife.com/Light+of+Creation (
There is no condition for damage.)
Theese are ... lets say arguable if they fit into this category ...
There is not really any condition ... you attack, and next attack you have additional damage ... so in my opinion, certainly:
https://baldursgate3.wiki.fextralife.com/Mourning+Frosthttps://baldursgate3.wiki.fextralife.com/The+Spellsparklerhttps://baldursgate3.wiki.fextralife.com/The+Joltshooterhttps://baldursgate3.wiki.fextralife.com/The+Sparky+Pointshttps://baldursgate3.wiki.fextralife.com/Deep+DelverAnd if i would want to be really precise ... +1 IS additional damage. :P
https://baldursgate3.wiki.fextralife.com/Sussur+Daggerhttps://baldursgate3.wiki.fextralife.com/Sussur+Greatswordhttps://baldursgate3.wiki.fextralife.com/Sharran+Crossbowhttps://baldursgate3.wiki.fextralife.com/Phalar+Aluvehttps://baldursgate3.wiki.fextralife.com/Steelforged+SwordThere is even weapon with +2! And healing!
https://baldursgate3.wiki.fextralife.com/Shattered+FlailAnd just for the fun of it ... it was not specified WHO is supposed to receive this additional damage ... so:
https://baldursgate3.wiki.fextralife.com/Sorrow 
And ofcourse generic vendor stuff:
https://baldursgate3.wiki.fextralife.com/Battleaxe++1https://baldursgate3.wiki.fextralife.com/Dagger++1https://baldursgate3.wiki.fextralife.com/Greataxe++1https://baldursgate3.wiki.fextralife.com/Greatclub++1https://baldursgate3.wiki.fextralife.com/Greatsword++1https://baldursgate3.wiki.fextralife.com/Handaxe++1https://baldursgate3.wiki.fextralife.com/Hand+Crossbow++1https://baldursgate3.wiki.fextralife.com/Heavy+Crossbow++1https://baldursgate3.wiki.fextralife.com/Javelin++1https://baldursgate3.wiki.fextralife.com/Light+Crossbow++1https://baldursgate3.wiki.fextralife.com/Light+Hammer++1https://baldursgate3.wiki.fextralife.com/Longbow++1https://baldursgate3.wiki.fextralife.com/Longsword++1https://baldursgate3.wiki.fextralife.com/Mace++1https://baldursgate3.wiki.fextralife.com/Maul++1https://baldursgate3.wiki.fextralife.com/Morningstar++1https://baldursgate3.wiki.fextralife.com/Pike++1https://baldursgate3.wiki.fextralife.com/Quarterstaff++1https://baldursgate3.wiki.fextralife.com/Rapier++1https://baldursgate3.wiki.fextralife.com/Scimitar++1https://baldursgate3.wiki.fextralife.com/Shortbow++1https://baldursgate3.wiki.fextralife.com/Shortsword++1https://baldursgate3.wiki.fextralife.com/Spear++1https://baldursgate3.wiki.fextralife.com/Trident++1https://baldursgate3.wiki.fextralife.com/War+Pick++1Ladies and gentleman!
Allow me to present you 5 out of 3 weapons that have unique attack.

And 42 out of 1 weapons that give additional damage without a condition.

Still not sure what this have in common with the fact that everything included in this "mod Larian should get inspired by" was allready in game ... so there is really nothing left to "be inspired by" ... but at least you have CORECT numbers at your disposal.

Showing you where you were wrong.
Done.
