Xarkris will attempt to break down the door. I rolled an ATHLETICS check of 23.

Xarkris forcefully barges into the door with his enormous armoured shoulder, shifting as much of his weight into it as he can. There's a deafening boom as he makes contact, the door bending in it's frame and the hinges creaking with the stress of the impact, with the lock also nearly warped entirely out of place. However, despite the poor condition the door is left in, it still holds up just enough to remained locked. The next Athletics check to break through it has advantage.

Xarkris tries again with ADVANTAGE and rolls a measly 15. 
I this attempt fails, and if Bilyur is willing, Xarkris will AID the Monk if he attempts to bash the door.

Eggo Lass prepares to cast guidance to aid in the busting down of the door.

Xarkris fails to break in the door, as expected, although he's suitable weakened it if Bilyur wants to have ago, especially now that Eggo has offered her guidance. The advantage still remains.

Bilyur, still shifted into his werebear form, approaches the door and attempts to smash through it. Athletics: (5, 13 + 4 + 2=19)

Unfortunately, Bilyur just fails to smash down the door. You’re all shocked at how resistant it is, seeing as you originally believed it just to be made of wood, but now that the wooden exterior has been suitably smashed away, you can see that beneath the door’s surface is a complex network of iron bars that are all locked into place within the doorframe, with the opening mechanism all tying back to the mysterious void-like keyhole, bringing you to the conclusion that this grand, vault-door like structure is clearly the reason the door is so hardy. Bilyur and Xarkris suspect that with the wooden front now removed, it should be a little easier to try and smash the bars out of alignment and power through, especially since they can now actually see the mechanism they’re aiming to destroy. [The DC has been lowered from 25 to 20, advantage remains]

Bilyur was pretty close to giving up, but threw his colossal weight at the door one last time, finally bending the steel frame out of the way just enough that we can make it through the door. {Athletics: 16 rolled +4 STR bonus +1 guidance=21}

Bilyur throws his weight against the door, and just manages to land an elbow into the recently exposed mechanism that jolts the bars from their slots, and the whole door is pulled down with a crash as he follows through with his lunge into it. After the dust settles and the echoing of the door against the cold floor fades, you are met with eerie near-silence; Bilyur has landed in a hallway, and the way before him to the next room is lit with a vibrant blue haze that is shining out of the cracks around the edge of the unlocked door. The quiet tapping of fingers continues to reverberate down the chamber from out of the room, and you are all unsure of what to expect.

{{Xarkris should probably lead with his really high passive perception.}}

Eggo Lass uses dancing lights to create a luminescent humanoid form to go ahead of Xarkris as a possible first-target of anything that lurks.

Xarkris will ready his axe and shield and cautiously enters the hallway, using his PASSIVE PERCEPTION to scan the walls, ceiling, and floor for traps, doors, and danger.

Xarkris takes the lead down the hallway, aside from the dancing lights ahead of him, and discovers no traps or threats within the hall itself as he moves down it, although he can definitely hear a blend of noises from inside the room he's approaching. It seems to be a mixture of the more noticeable tapping, and then a faint, periodic crackle of some sort, coupled with an even more sparse moan, or gibber.

[[
Oh... So that's what it is... Did this lich has influence from the Far Realm perhaps?

]]

"Let's approach with caution." says Eggo Lass. She turns around to look back. "And hope the way is clear if we needs retreat."

Xarkris will head toward the noise.

Bilyur will follow closely behind Xarkris

Xarkris determinedly enters the room that the noise is originating from, the party close behind, and the door opens with a creak. His high levels of perception allow him to take in everything within the room in a split second, which proves vital considering how fast things escalate after his entrance. The first thing his attention is drawn to is the loud tapping; it is the crawling claw from earlier, as expected, crawling upon an anatomical model atop a 15 foot workbench at the north of the room. The creak of the door and Xarkris' intimidating entrance alarm it though, and it almost immediately springs from the model back into the vent in the floor from which it arrived through. This leap is enough to rock the model, and it falls to the opposite side from which the claw jumped to. This causes it to crash into a hanging cauldron that was just above the workplace, which Xarkris identifies as the source of the occasional murmuring gibbers he heard, although this is swiftly confirmed. 

The cauldron sloshes forth, and out spills a grotesque, hideous creature, which appears to be a blended, bubbling assortment of body parts from what could be hundreds of creatures, though it is mainly defined by the vortexes of teeth that swirl about its liquid flesh form. The gibbering mouther writhes about on the floor where it landed, and its foul screams become louder and more frequent, not to mention that the raw, ungodly magic which animates the mouther also seems to be melting the floor around it into a tumultuous sea of stone, which bubbles like boiling water and occasionally bursts up in tentacle-like sprays. However, the shattered dormancy of this vermin is not the only issue, as the swinging cauldron then falls back, and hits an enormous, glass turret of lightning at the end of the bench, the source of the crackling blue light, which then also falls like a cruel game of dominoes.

You are aware that captive lightning is a possible and rare phenomenon, particularly in the Feywild, but before you can feel any awe over it first hand, it has already fell of the edge of the work bench, and into the main attraction of the liches private study; the [monster] flesh golem [/spell] he had assumedly been building, but never animated. Its form is impeccable, a perfect combination of a wide range of parts to create what could pass as an angel in its beauty, bar its neatly hidden stitches and the copper wires wrapped about it. However, this unnatural, unholy, and yet so gorgeous and faultless creation is demerited by its foul brother nearby; in this split second of perception, Xarkris concludes that the mouther is what likely became of the golems unused parts; they are two halves of a whole, or more likely, the split chunks of hundreds of unwilling wholes. The smashed vial of captive lightening is drawn into the ingrained conductors on the golems body, and this spark is the final piece the lich must have needed to animate it. The only thing Xarkris can think as it lurches forward is how hopelessly unfortunate the Heralds Of Dawn must be in this moment, to bear witness to an accident that could have befallen any other party, and which finished a project centuries in the making.

Roll for Initiative.

Initiative Order
Mouther (Empty Black Square): 9
Golem (Solid Black Square): 7

Status (In Spoiler)

Spoiler (click to hide)

Enemies
Flesh Golem
Gibbering Mouther

NPCs
Techi: -6 HP, 2/4 1st Level Spell Slots Expended, 2/3 2nd Level Spell Slot Expended, 3/4 Sorcery Points Expended

[The smaller, 10 foot radius square around the mouther is difficult terrain. Each creature that starts its turn in that area must succeed on a DC 10 Strength saving throw or have its speed reduced to 0 until the start of its next turn. The larger, 20 foot radius square around the mouther is the range of its gibbering.  Each creature that starts its turn within 20 feet of the mouther and can hear the gibbering must succeed on a DC 10 Wisdom saving throw. On a failure, the creature can’t take reactions until the start of its next turn and rolls a d8 to determine what it does during its turn. (I'll post results of the d8 roll if and when they are activated)]

Eggo Lass init: 11+3 = 14

[[
Well a gibbering mouther AND a flesh golem? No body horror here at all! :P

Looking forward to this. :D
]]

Quote from VitusW >>

[[
Well a gibbering mouther AND a flesh golem? No body horror here at all! :P

Looking forward to this. :D
]]

 [Well this is the lich who specialises in body horror after all, it wouldn’t be right not to have this pair. Plus from looking at the stat blocks, these two actually synergise really well, so it’ll be fun for me too!]

Sly makes a face at the horribleness at it all, almost ready to run away.

Initiative: 17