Lost Lab of Kwalish

1 Contested grapple and 2 if applicable (this is homebrew, but i think reasonable:  DC 13 save to maintain grip on Tetrevess)

1 11 

2 17 

Gravity is unable to get a grip on the smooth dorsal surface of the trapper.

Gravity finds no other way to rescue the wizard and casually flies towards the next chamber: "I'll be back within a few minutes."

Tetrevess will attempt to escape one more time with conventional means- squirming to try to get out of the grasp of the creature…

4 dex save

and if that doesn’t work, he will use a second level slot on misty step (bonus action)- teleporting down the stairs some more.

misty step just has a verbal component 

This workshop features a number of tables covered in jeweler’s tools and materials — including three large diamonds. Set against the back wall is a couch upholstered in golden cloth, on which rests a headless body outfitted in elaborate robes.  When Tetrevess descends rhe final step, the corpse body rises to its feet.

The trapper climbs up the wall to rest flat against the ceiling. It's false appearance causing it to blend almost perfectly with the ceilings surface. Attacks against it are at disadvantage.

<no initiatives, the trapper is functionally more of a trap than a monster.  The headless body doesn't do anything else at the moment.  Waiting on you guys>

Isn't the trapper visible and shedding lights due to the effect of 'Branding Smite'?

Gravity will fly towards a table to claim the Jeweler's Tools for herself, then she'll use the set of tools to examine the property of the diamonds.

Investigation (Jeweler's Tools): (14,15)

Tetrevess will blast the trapper with a fire bolt:

24 to hit and 10 damage

<whoops. Forgot branding smite had an ensuring effective. Well, I doubt it knows it's shedding dim light either. So it doesn't change the trappers actions, but yiu are correct, it csn be seen.>

The trapper writes violently upon impact, but settles and smooths itself against the ceiling again after a moment.

<Would Gravity touch or manipulate the jewels in the process? >

In addition to a set of jeweler’s tools, one worktable contains plans for crafting the jeweled silver skull of a demilich. The three large diamonds (worth 1,000 gp each) have already been cut and fashioned into teeth.

Definitely, she'll use the set of tools to remove the ruby from the door after that.

The headless body slams Gravity 10 for 10 bludgeoning and 9 necrotic damage. 

DC11 Str save or be knocked prone. 

Quote from InkedBee >>

Definitely, she'll use the set of tools to remove the ruby from the door after that.

 The door is forcing itself open against the floor right now.  You'd have to right it or prop it up somehow first to access the tortle head.

Gravity: Strength Saving Throw 19

Quote from Wile_E_Coyote >>

Quote from InkedBee >>

Definitely, she'll use the set of tools to remove the ruby from the door after that.

 The door is forcing itself open against the floor right now.  You'd have to right it or prop it up somehow first to access the tortle head.

She will try to fly upwards to protect herself and examine the door later. 

I think that's an aoo.

11 for 10 bludgeoning and 5 necrotic damage. 

<So, Here's the thing.... this is kind of written as the 'end' of this 'act' and its fine that you don't have the thing that makes this almost empty room into an event; it's not a railroad.  I just don't know how to elegantly let you know there's nothing else here.>

<nore elaboration: youve seen all of the Tomb, but if you did the temple to completion, this room would be something more.  It belonged to Seodra, the gemsmith, who is in the Temple of Moloch>

Ana looks around. "So... now what?" They made a mess of this place and she wasn't sure her Queen would approve. She tended to prefer... more subtle approaches. Of course she hadn't been ordered not to make a mess but the archfey expected her spy to anticipate her wishes. I'd better check in and get more orders when I have some time.

Constitution Check: 21

"Alright, I won't steal your diamonds or teeth...whatever these things are. Where's Seodra? She seems to be working on something"- Gravity will assure the headless body while pulling away the Wand of Web. She will cast Web on the Trapper to prevent it from attacking anyone else.

"Tetrevess, do you remember the time when I was shamelessly eyeballing you? It's because you immediately assumed that we're friendly group of adventurers, without asking about our intention. My friend Ana might explain the situation to both of you, if you don't trust me."

“I am curious about your intentions.  But I merely assumed you wanted to destroy this place.  So I thought we might as well work together.  But tell me more- what is your goal?”

<So, are you guys planning to go see Seodra at the temple of Moloch or should we wrap the module?>

(Gravity is about to make a deal with Tetrevess and Sam. Since they've been helping her to survive the 'Tomb of Horror', she'll help everyone to survive in the 'Temple of Moloch'. I'll role play this part after reading the earlier posts of this thread as I don't know how much mischief the previous party committed.)