Mal once again transforms into a man before your very eyes.  He walks up to the shield...and turns it to face the wall.  This seems to be entirely effective!   Then he reaches for the spear in his shoulder but finds it's vanished...so he fires his crossbow instead, but the shot goes wide.  Then he turns back into a woman. 

Grenk meanwhile strikes down a skeleton which explodes into bits of burnt broken bones, but his second attack misses. 

Skeletons clamber out of the big glass cauldrons, as yet more beneath begin to form.  All at once they're upon both Mal and Badger as attempt to swarm them, while two clatter across the floor spending their effort to try and reach him. The one in front of Grenk takes a stab at him. 

Skeleton tries to stab Badger with a rusty, unhygienic rusty short sword : Attack: 24 Damage: 10 , then another .. Attack: 6 Damage: 4, and another .... Attack: 22 Damage: 8 and another Attack: 16 Damage: 5. 

Four also close in around Mal, attacking her.  Attack: 9 Damage: 4.  Attack: 13 Damage: 6. Attack: 19 Damage: 6.  Attack: 18 Damage: 4. 

One attacks Grenk:  Attack: 17 Damage: 7

Then Sickle moves into the room, and pulls forth mystical energy from his holy symbol.  Solid rock walls grow into place, sealing off parts of the room. 

Badger, Silas, your actions. 

Oh the horror! Who knows what manner of vile germs these skeletons carry? Surrounded on all sides, Badger is relieved when the intervening wall suddenly appears, cutting off half his attackers. Eager to escape the unsanitary conditions, Badger teleports to the chariot so as to be standing on top of the sarcophagus, removes a magic bead from a pouch, takes aim, and lobs it into the midst of the disease-ridden foes...

(Aiming to have the 10' radius encompass S9/S10/S6 and hopefully avoid Mal. I would aim for Mal and hope she made her saving throw, but if she didn't she would never forgive Badger.)

Silas let out a deep sigh before moving into the chambers himself and casting Sacred Flame on on Skeleton #12. 

Dex Save: 16
Damage: 5

S6 Dex: 15

S9 Dex: 19

S10 Dex: 22

S12 Dex : 10

All three skeletons manage to move quickly enough to avoid the sudden sphere of force that appears, and are pushed into the corner between stone wall and bead of force wall and one closer to Mal.  Though not caught in the wall, two are pressed uncomfortably against the wall of force and wall of stone.  Silas hits one skeleton with his blast of flame, scorching some it's bones.

Two more skeletons come crawling out of the glass cauldron's near Grenk, bones beneath them continue to shake and stir. 

Grenk and Mal, you're up!

Mal will use her cunning action to disengage from the skeletons in front of her and move over to the glass cauldron that S13 is climbing out of and slam her shoulder into it hoping to knock it over and break it.

STR Check: 21

Grenk will take a slam at the glass cauldron with the sword.  Of it bounces off with no affect he will attack a skeleton.  If it damages but doesn't destroy it, he will attack it again.  If he does shatter it with the first blow then he'll hit a skeleton.

Attack: 27 Damage: 16 + 11 fire + 4 radiant 

Attack: 27 Damage: 12 + 5 fire + 5 radiant 

If one hits a skeleton then here is an addition 1 radiant

Mal slams her shoulder into the glass cauldron.  It rocks precariously and then falls onto its side, spilling bones everywhere.  3x2.  Several cracks appear, but the glass seems too thick to break so easily.  Bones still piled in the cauldron continue to jump and move as they assemble into skeletons.

Meanwhile Grenk shatters the first bowl into bits with his sword, then turns and chops down a skeleton, with perfect strikes. 

Four skeletons near Mal all close in on her, trying to hack her up. Attack: 24 Damage: 12 Attack: 18 Damage: 3 Attack: 12 Damage: 6 Attack: 8 Damage: 3.

While three around Grenk try to hack into him.  Attack: 22 Damage: 5 Attack: 24 Damage: 10 Attack: 10 Damage: 7. 

Sickle runs over to help Mal, and leaps up behind one of the skeletons near her, striking it. Attack: 26 Damage: 10

Badger, Silas, your actions. 

Badger casts Bigby's Hand to appear beside the cauldron that Mal knocked over. Operating the hand like a puppeteer, Badger clenches the hand into a fist and attempts to smash the cauldron.

Attack: 10 Damage: 13 force damage

Silas looks around the room before moves ot the center of the room next to Badger, holding his holy symbol over his head as he Channel Divinity to turn Undead. If they're CR 1 or less, they're destroyed instead of turned. 

Badger summons a powerful glowing blue fist, and, puppeteering it from where he stands on the top of the chariot, he makes a fist and slams it down, smashing the glass cauldron to pieces. Silas steps forth and raises his holy symbol. The skeletons in the room clatter to the ground suddenly, and it's quiet...aside from the two zombies that continue trying to flee backwards away from Silas.  From his position just near the edge of the rooms corners, that continues to be away from the door, and keeping it open.

(combat is over, though you hear a continuously growing sound of clattering coming from the far side of the stone wall....). 

Grenk calls out, "Take this moment to break the cauldrons!"  He will then rush about the room breaking the cauldrons.

Mal will move back to the chariot and continue to gather the rest of the treasure there.

Grenk, the two cauldrons available or broken, and a stone barrier blocks you from getting to the rest of the Cauldrons.....behind the stone barrrier though, they seem to still be generating skeletons, because there is a somewhat slowly gathering sound of more skeletons being generated. 

Mal picks up three gold cups and then touches the golden amulet.......strange shadows shift across the walls, forming the outline of a long-legged bird. Its beak stabs at you as a voice echoes through your mind: "You will do as I command!"  (Charisma Saving throw if you wish to resist...)

Mal CHA: 18

Everyone watches as the shadow gets sucked into Mal. 

Grenk thinks to the new passenger inside his mind and asks, "What do ya know about the bird?"

I'jin replies in a snarky voice to Grenk, "Oh man....a pure nightmare. A know it all, imperial doofus who thinks he can order everyone around him to do whatever he wants. I feel bad for your poor friend." 

To Badger the voice in his heads sighs heavily, "Oh no. Papazotl. He can be very troublesome. I find it's best just to do whatever he says. Path of least resistance...until you can get away form him."

Silas watches this, and groans internally.  Oh no....another one.  Maybe now is a good time to try something....  he should ask Sickle.  He turns to see Sickle stroking the icy ring on his finger, but then Sickle notices Silas watching and stops, looking very guilty.  Silas starts to feel very very alone.

Mal places the amulet around her neck and then looks around the chariot for anymore treasure.

Then she will move to the secret door again and make her way through it. "There is another secret door down here, going to check it and then move on."

Once at the door, Perception for any traps: 18

Mal grabs the rest of the treasure on the chariot (total there was: a gold torc (250 gp), three gold cups (75 gp each), five gold cloak pins (25 gp each)), and then walks past Grenk on the way out through the secret door.  Mal walks past the dusty bottle sitting on the table in the alcove and arrives at the back of the other secret door.  She checks it. Definitely no traps.