Muriel keeps moving stealthy around looking for Yanyi, while she keeps analyzing the paths to see if there is anything of worth 

Stealth: 13

Perception: 26

Mummy 4 is in Muriel's way but with its fairly low passive perception it failed to detect Muriel. The middle cavern splits north and east as Muriel approaches from the west. The cavern is more dry here with cracked walls and stalagmites on the cracked ceiling. Small creatures passes through the mummy unharmed as they make very little noise. There are snuffed torches on the walls and the ceiling is held up only by old termite eaten wooden posts. Muriel heard Tommy's muffled shout from the eastern cavern. Muriel looks towards the mummy she passed but it did not notice the shout.

Mummy 4 is still oblivious of everything. 

Tommy and Jerry's turn.

Jerry death save 5

Tommy wis check 22

Able to keep his head about him Tommy pulls out a bead of force. Discides against it.

Action doff shield AC now 16. Free item interaction pull out long bow. 

Tommy looks at the roof trying to see if a bead of force/spell, or attack would cause the ceiling to collapse 

Nature 13 

End of turn

(Narrator: Nature check succeeded. Yes a bead of force/spell or an attack that is strong enough can collapse the cave damaging and trapping everyone (in a section divided by the supports) inside it. roll investigation for details.)

Investigation 21

Cocozan was literally able to keep his wits about him against the mummy's glare. he chuckles to himself thinking that was an experience until his eyes met Jerry's unconscious body and his smile disappears. he looked up to see how Tommy is doing and saw that Tommy pulled out his bow. Cocozan thought to himself: "Yes, I do want to make this thing pay for this." 

He spoke to Tommy in a hush tone.

"My friend, spike growth will keep it from us, I will keep my concentration and take potshots at it as it tries to get to us. We will make sure death awaits his undeath."

 Cocozan lets go of the rope and ran 15ft towards the mummy knowing that its glare does not affect him anymore. He closed his eyes to finish a short cast and released the spell Thunderwave. tendrils of lighting sprouted from his fingers and an audible thunderous force was heard inside the cave. The cave rumbled and shook.

Thunderwave damage: 9 (Mummy needs to do a Con Save or take full damage + shoved 10ft back.)

Mummy 1 con save: 5

"Lets get Jerry out of there, I can heal him." Cocozan picks up Jerry with his shield arm effectively disabling his shield. Cocozan ran back 15ft waiting for the rest of them.

(Investigation check fails and Tommy was unable to discern how much force and where the damage needs to happen to collapse the ceiling)

Mummy 3 hears the audible boom and walked towards the sound.

Mummy 2 hears the audible boom and walked towards the sound.

Mummy 1 took 9 damage from thunderwave and was pushed back 10ft. he noticed the growth but cannot go around it as it occupies the width of the cave (10ft). Focused on the living he moved forward 10 ft. He is back on Spike Growth taking another 7. He finished his movement by moving another 5 ft where he took another 4.

END OF ROUND

Mummy 1 HP: 31 - 19 = 12/53.

 Turn order: Muriel, Mummy 4, Tommy, Jerry, Cocozan, Mummy 3, Mummy 2, Mummy 1

Threat 2 Round 3 Start

Muriel's turn

Muriel starts dashing to down yue eastern path where she heard Tommy's shout and tye boom of the thunder wave.

Muriel used up her movement of 40ft but is blocked by Mummy 1 who is 10ft away. She can still use her action.  Her passive perception allowed her to see the changed ground where the Mummy 1 is.

Mummy 4 heard the boom and looked towards the eastern tunnels and found Muriel as she dropped her stealth. It hobbles towards her 60ft away.

Tommy and Jerry's turn. I will also take Muriel's action otherwise it will be a dodge action.

Jerry death save 4

That's 2 saves 1 fail due to Thunderwave. Tommy seeing that Jerry is out of harms way he will focus on the threat. 

Action will shoot an arrow at the mummy

Attack 22

Damage: 8

Hunters mark 3

Tommy's revenge was completed with one shot of his bow effectively ending its unlife.

Cocozan touched Jerry's mane. "You have saved my life, dear friend. Let me do the same for you."

Cocozan casted Cure wounds 10 allowing Jerry to wake.

Cocozan looks around the cave for anything they can use. (perception check : 14

Cocozan notices the stalgmite riddled ceiling and walls are supported by old rotting wooden braces. 12 dmg to break AC 8 (It doesn't really move). It will destroy the middle section of the cave.

"We can collapse the cave. I suggest we wait for them to walk into the spike growth so we can end them." He quipped to Tommy.

Cocozan notices Muriel when Mummy1 fell. "Muriel HERE!" 

Muriel will throw a daggar at mummy 1

Hit: 18 

Piecing damage: 8

Mummy 2 drags his legs towards the sound of combat. He is 10ft away from Muriel and uses Dreadful Glare on her. (Roll a wisdom save of 11 please Muriel). Mummy 2 takes 8 damage from her thrown daggers (Mummy 1 have already passed away.. twice).

Mummy 3 lags behind 60ft from Muriel along side Mummy 4.

End of Round.

Muriel to move. Followed by Mummy 4, Tommy, Jerry, Cocozan, Mummy 3 and Mummy 2.

Threat 2 Round 4 Map

Muriel wisdom save: 12 

Muriel shakes herself back to reality and rushes towards Yanyi, drawing out her quarterstaff

Muriel resisted Dreadful Glare and ran towards Cocozan.

She did not realize the change in the terrain and at the last minute does a Wisdom Perception check  DC=13 before she enters the Spike Growth. 

(Muriel please do a Wis Perception check to avoid damage from the spell Spike Growth and see if there is a way to cross a 20ft damaging terrain)

Wisdom check 18 

Muriel skids to a stop barely avoiding the spike growth. Muriel, being a eladrin elf, has access to the misty step spell, and so she uses that to get to the other side. 

Muriel then says, "Sorry I am late, what did I miss?"

Mummy 4 moves forward 20ft. Unable to affect Muriel or Cocozan with its glare.

Tommy and Jerry to move.