Seeing nothing disastrous, Badger will step through, taking Civvy along. If the creatures are still speaking when he arrives, then he may be able to comprehend them due to the doll's gift...

Grenk cautiously approaches the sack.  "Cover me," he says as he approaches.  Carefully, with one foot he steps on a corner no hold it in place and then cuts a hole to see what's inside.

Mal raises her crossbow swinging it back and froth between the body bag and the creatures that re shackled.

Badger hears the creatures in chains mewling to be set free. 

Grenk cuts a hole in the bag. Inside you see a human male dressed in rags. He looks to be sleeping but doesn’t wake up if you shake him. 

"We got another captive over here.  Not dead but unconcious," he says.  He leaves the body for the moment.

Grenk looks up at the green creatures.  Immediately they are not recognizable but he thinks on it.

Arcana 15

Grenk looks at the strange shrivelled creatures. They're in a bad state, but he recognizes them as nothic.

"What is all of this," Silas states as he looks around, Warhammer in hand and shield held up as he looks around. 

Grenk smiles and holds back a chuckle.  "They are nothics...  mages that tried to become liches but failed and were cursed to this.  They still crave knowledge and are drawn to such places.  All in all, they are still evil and releasing them means they will eventually cause harm to others.l but be warned, their gaze can rot flesh from bone."  

He whispers to the others, "best to just eliminate them all together...  coordinate an attack? "

Now that the quest is completed, Badger is disinclined to destroy the dungeon's denizens out of hand. From now on, he sees them as potential resources that may serve to bolster his defenses, as he establishes himself as the new master of this magnificent maze. And so he tries to curtail Grenk's natural distate for the horrid creatures...

Wait a moment. Why are they shackled? Perhaps they are no allies of Acererak, and may therefore be willing to disclose the secrets of this place in exchange for clemency. Let's release just one and see how it responds.

Regardless of the group's actions, Badger will use his helm to cast Detect Thoughts and scan the surface thoughts of the eight nothics.

"I can unleash the wrath of Torm with a flame strike if you can gather them together," Silas whispers to Grenk as Badger tries to be the diplomatic. Switching his warhammer for his holy symbol. 

Sickle mutters, "If you can get them to all sorta line up....lightning could do some damage." 

Badger hears their thoughts....and...they are horrid creatures.  In their minds, each of them think they are greater than each of you or all of you combined, and demand that you lesser creatures release them so they may return to trying to please their great master Acerack....

Loyal servants of Acererak are of no use to Badger. Yes he wonders why they were shackles here. Hoping to get something useful or of them before his companions begin the slaughter, he calls out: 

"You wish to be released? Then tell us! Who chained you here? What were your crimes?"

"They are chained to walls...  I can't really move them with out releasing them...  just hit what you can and we do clean up." Grenk responds.

Silas ignores Badger actions for now and move to unconscious human man, casting Spare the Dying before trying to give him a few slaps to try and wake, "He may be more talkative than those things," If he doesn't wake up, Silas will give him a look over to try and figure out what's wrong.

Medicine: 22

Silas, give me an Arcana or Religion check instead. There is something strange about his state that your skills with medicine reveal are not natural.  Slapping him does not wake him up.

Badger yells at the creatures in undercommon, which is what they are speaking.  "Release us or your flesh will rot from your bones!"  One of them yells, "Release us, you've no hope of mastering Acerack's dungeon for yourself pitiful wizard!"  

Sickle casually walks over to one wall, where he has all eight creatures, chained to the wall, in a convenient line. He glances over at Grenk and smiles. It's the first smile you've seen from the half-orc in a while. 

A lightning bolt leaps from his hands and tears through the creatures. 

38 lightning damage, DC 17 Dex save for half. 

Nothics: 13 22 9 16 12 4 13 9

The lightning tears through the group of Nothics leaving them scorched and sparking, but none go down.

Everyone roll Initiative.  

Sickle: 17

Nothics: 11

Sickle unleashes another bolt of lightning through their ranks : 18 damage.

Nothics: 13 10 10 13 9 23 22 12

4 of the Nothics collapse in smoking piles. 4 look still alive, though all are smoking and twitching from the electrical damage.

If you go before the Nothics, feel free to take your action.

Silas Religion: 24

Silas Initiative: 15

Silas can take his turn. 

Also, after briefly examining the body, he figures there's some sort of witch curse keeping the body in a sorta stasis. A bit of holy water should break the curse. 

Grenk initative 26

Grenk waits until after the lightning and the stabs at the nearest one remaining and continues down the line if takes the first out.

Attack: 21 Damage: 6 + 6 fire damage + 4 radiant damage

Attack: 15 Damage: 4 + 5 fire damage + 2 radiant damage

I rolled with advantage because they are restrained.

Silas pats himself down before realizing he has no holy water on him before turning to the nothics and cast Spirit Guardians.

Wis Save: 16

Damage: 18

Mal Initiative: 11

Mal will walk up to each of the creatures that are still alive and from about 10' away raise her crossbow and aim for its head/eye.

H. Crossbow: Attack: 27 Damage: 14

H. Crossbow: Attack: 31 Damage: 11

Sneak Attack on 1st hit: 3