2Zeratul:

the servants and acolytes hurried along.

Then write it like this: "His servants and acolytes of the first and second levels barely kept up with..." Otherwise, that comma after "servants" looks like a clarification of what kind of servants they were...

Colleague," replied the Archmage. Then comes the Dark One's reaction. I indicated this in the punctuation. Although you are right, it should have been moved to a new line.

Hmm... Your suggestion -

"Yes, brother. Our Hilael has very important information." Trent's face contorted.

is direct speech. Highlighting with quotation marks and the author's words... What you wrote next without quotation marks and with a capital letter doesn't save the situation...
Compare:
"This fool dared to interfere with me!" - Edwin's face turned red with anger...
Does it seem like Edwin is speaking?
In short, fix it... or write: "..." - The Archmage didn't have time to finish his thought when Trent's face... Or make it a separate sentence without any dashes, so that it doesn't look like a continuation of the direct speech.

They were destroyed quite quickly, but then the sentries, who had revealed themselves, were hit by a Cloud of Death.

In this case, I didn't specify the attackers, since the first strike was taken by the sentries, who might not have known the specialization of the "attackers." We understand that liches attack with a Cloud of Death, but simple scouts may not know such details.
It can be written like this:
The (enemy) invaders were destroyed quite quickly, but then, the enemies (outsiders) hit the sentries, who had revealed themselves, with a Cloud of Death.
Correct, the elves don't necessarily need to know the names, but everyone who is not on their side can be called outsiders, enemies, invaders, attackers, stinking army, bastards... in short, in different ways... otherwise, your sentence just seems incomplete...

P.S.: I saw that you have already fixed it... good...

Now, let's move on to the edits:
2Dinhot, regarding the text where the book is already mentioned:

1) Reread the first sentence of your post and correct it. It doesn't relate to the text, of course, but it still hurts the eye...

2) Note that where the text mentions the stand for the sphere for the messire, the gnome's weapon was corrected to a hammer (and the typo was removed accordingly)...

3) Read Zeratul's posts - he made some corrections and suggestions...

2Zeratul (again) - please make your corrections (for example, about the poisonous cloud), taking into account my corrections (about direct speech, servants, and acolytes)... And about what else we wrote - add them to your text. Then let Dinhot copy and paste the text about the elder again...

And again about the text:

Therefore, the elves looked around with interest.

with interest

That's all... for now, I don't notice any more mistakes. Take all of the above into account and correct it. Oh yes, listen to Zeratul and move his text:

Sincerely, Simas