(Was not meant as such :) it was an explanation for Sekkar's move)

Kaylyn moves to the mouth of the cave and sends a blast of energy at the other duergar on the Mesa.

Attack: 25 Damage: 13

*shrug*. If she must, she'll sheath her sword and toss her shield over her back before climbing. 

Zeno will rum forward and begin climbing as well, his... previous experience lending itself well in this moment, and he felt confident as his feet and hands grasped for purchase, thought he quickly found rock—climbing to be more strenuous than expected). (Second Story Work feature says “Climbing no longer costs you extra movement...”)

Athletics: 3

Rhayna follows behind Kaylyn and cast a spell on the her target. (Toll the Dead DMG: 3)

ROUND 2

With three of it's brethren dead, attackers charging into the cavern and more at the entrance, the lone remaining duergar vanishes from sight, seconds after taking one of Kaylyn's magic energy blasts directly to the head, and narrowly avoiding being completely overcome by two huge ghostly books slamming together in the air around it.

Sekkar runs around the left of the mesa, sure that he heard several duergar in that direction. Pax and Zeno both race for the mesa, with Pax managing to scramble up the wall, but Zeno hitting an unlucky section of loose scree and failing to make any extra altitude. Both however catch a glimpse of two more hooded figures far to the right who blink out of sight.

Kastix's turn...

With Pensive wrapped around her neck and keeping watch over her Kaylyn judges where she last saw the duergar that she just hit and hopes that she can get him again with her eldritch energy.

Attack: 21 Damage: 12

Kastix will move forward towards the pyramid before pointing his wand at #4 and firing a Firebolt, "Ignis!" 

Attack: 11 Damage: 4 Fire (hide head in shame, this is +7)

Kastix launches a mote of fire at the duergar's last known location, but it strikes the ceiling on the far side of the cavern. Looking up, it is apparent that large crystals growing on the roof are the source of the sunlight-like beams streaming down from above. They seem to be condensing and reflecting the light from bioluminescent fungi as well as the faerzress glow.

The telepathic presence felt earlier now returns in full force, this time with a powerful otherworldly voice that cries into each mind:
At last! Intruders! Now it is time to kill...

From somewhere overhead and near the entrance, two beams of energy streak down toward Zeno and Pax. 2, 2, 2, 1

Zeno, please make a CON save. Pax, please make a WIS save. If you get 13 or more, then post your next actions as normal, otherwise... don't.
Everyone else can go for round 3.

kastix will contined his movement towards the large amount of people in the back.

If he's within 60ft and can see them. 

Otherwise, Kastix will fires a firebolt at near enemy he can see.
Attack: 12 Damage: 5 Fire

Rhayna will poke her head into the cave. She looks toward the direction where the beams of energy came from, and she will try to locate the telepathic presence. (Perception: 21)

If Rhayna is able to locate the presence, she will cast Guiding Bolt (DMG: 14)

(WOOHOOO!! Finally some decent damage output!!!)

Pax Wisdom Save: 8 + 3

Pax decides she doesn't want to take her turn as normal.  

Zeno Con Save: 11

Zeno looks unhelpfully at the mesa wall in front of him, thinking, "who likes taking turns anyway?"

Sekkar did not see the welcoming committee just yet but was ready to greet it:

Full movement, Action - throwing handaxe (if you allow to hold the sword in the same hand with the shield for a moment): Attack: 8 Damage: 11  

Bonus action: Ensnaring Strike    (Str save 13 or 2 damage)

and all of this on number 5 or whoever is the closest.

Still get a turn, it's just options are... limited.

Zeno is now paralyzed. He can repeat his saving throw at the end of his turn, but unless he passes this will last for one minute.

Pax is confused this turn. She can’t move. She can only use her action to make a melee or ranged attack against a randomly determined creature within range, but with no-one in melee range, and no ranged weapon, then she can't do anything except look confused. She also can’t take reactions until after the end of her turn.

Just a note for the invisibility on duergar (and in general). You still know their location (unless of course they decide to Hide) and can attack with disadvantage (so need another attack roll from Sekkar). They can't be targeted with spells or abilities that refer to 'targets you can see' but other spells are fine. Fireball incoming!

OOC: Kastix technically goes after them so they may be visible by then

Second attack roll: 21

Will wait until Kaylyn has posted...

Meanwhile, need a spell attack roll from Rhayna.

I preposted here

https://www.dndbeyond.com/forums/d-d-beyond-general/play-by-post/47787-zorgs-lost-souls?comment=2518