Quote from Helmut_McQuack >>

I walk to the plinth directly in front of me and investigate it: 9

I also investigate the carvings surrounding it: 25

Edit: 2 and 18. Huh.

You walk down the length of one of the points of the star, and as you investigate the plinth, you see a small, round bottle on it with a glass stopper, and the letter "S" embossed from the stone surface of the plinth.

The carvings on the wall around it are all of various navigational tools - sextants, compasses, stars, and so on. You also notice a verse seems to be present between the carvings, winding its way around the room, repeated over and over again in the gaps between the shapes;

one to make you colder
and two to make you warm
two to take the pain away
and two to grow to thorns
one to let you leave here
and live another day
seven others, we fear
will go the other way
Never should you drink this
Not Ever will you be free
Escape is possible, yes
Sip Endless night from me
Save yourself from my grasp
Swift Wings will bear you death
Words will not spare your passing
Nor Warm your dying breath.

I proceed clockwise around the room, investigating the remaining plinths, while checking the walls for any inconsistencies, special designs, etc. Do you want seven Investigation checks for that, or just one? Also, I assume searching the walls would be Perception? I'll give one of each to start with.

Investigation: 17

Perception: 14

Quote from Helmut_McQuack >>

I proceed clockwise around the room, investigating the remaining plinths, while checking the walls for any inconsistencies, special designs, etc. Do you want seven Investigation checks for that, or just one? Also, I assume searching the walls would be Perception? I'll give one of each to start with.

Investigation: 17

Perception: 14

One of each is fine!

You start moving around the room, and the pattern on the walls remains a beautiful intertwining of navigational tools, with this same verse repeating over and over around the room. You don't see any inconsistencies, except for the large flat section, which is unadorned and recessed with where a doorway seems like it should have been, but it is instead the same heavy stone blocks which the rest of the walls are made from.

The first plinth you come to, moving clockwise, has an identical bottle on it and "SW" embossed from the plinth. The next has "W", the one after that "NW", then "N", "NE", "E", and "SE". All of them have identical bottles on them, and are lined up with the points of the star design in the floor.

I drink from the bottle on the "E" plinth.

Quote from Helmut_McQuack >>

I drink from the bottle on the "E" plinth.

And there was me worried I'd made it too cryptic!

You drink from the bottle on the plinth and taste... nothing. The bottle seemed to contain only water - but as you drink from it, a doorway appears on the wall, where you would expect it to.

(and that's me out of ideas again! Anyone else got anything, whilst I try and come up with something new?)

(Sorry if I solved it too fast, everyone. It was a good room! Sorry, I have no ideas.)

Man I missed all the action!

Sorry I couldn't come up with something. I'll have to do that eventually but it probably won't be able to any time soon.

That last room was cool too! Can't wait for the next one! (no matter who dms it)

Do you mind if I use that room? I'm not sure exactly how I would use it yet, but eventually I will if you're fine with it.

Also, based on the first half of the poem, do different bottles kill you in different ways? (Freezing, burning, whatever "take the pain away" would mean [instant, painless death?], thorns of some kind.)

Of course you can!

One freezes you, two burn you from the inside, two kill you by making you numb and two cause a thorn bush to grow from inside you!

I'll see if I can come up with anything else, no promises though! That last one was a spur of the moment effort!

Also worth noting that the death ones, in a real game, would act over several rounds of continuous damage, so they have a chance to get the right bottle. I'd also give one bottle for each player, but that's obviously a bit difficult in a dip-in-dip-out sort of game! And if you drink 2 bad ones, well, guess you're full of a flaming thorn bush, or freezing but don't feel it, and taking damage from both sources!

Okay then, slight retcon for this one:

The doorway didn't appear; instead, when the potion was drunk, there was a jolt and the floor starts to descend. The plinths sink into the floor and disappear from view, and something starts to rise from the centre of the room - A huge bronze hat, followed by a head, and soon there is a three-times-height bronze statue of a dragonborn sea captain stood in the middle of the room, one hand on the hilt of her sword and the other hooked in one of her many belts, her eyes squinting towards an unseen horizon.

In the walls around you, in this (about) 100ft. diameter circular room, there are 4 stone doors, set 10ft above the ground, aligned with North, East, South and West on the compass on the floor. There is also a large, heavy wooden door at ground level, with thick bars holding it closed.

There are doors!!! Harmony will investigate the statue.

Perception: 17

Investigation: 12

Quote from UndauntedDM >>

There are doors!!! Harmony will investigate the statue.

Perception: 17

Investigation: 12

The statue is made of bronze, and is of a seafaring dragonborn in captains regalia. She was looking purposefully towards the doorway, her hand on her sheathed sword.

I say "Was", because as you are investigating her, you hear a metallic screech from above you (anyone familiar with the original "Jason and the Argonaughts" movie will have this sound in the back of their minds, just for such a scene). Looking up, you see that she is now looking down at you, and in a none-too-friendly way, bronze teeth bared. With another metallic shriek, like the rending of metal, she draws a huge brass cutlass, the blade easily as tall as you are, and takes a booming step off the low dias in the middle of the floor, towards you. You all feel the tremor as that weight of bronze hits the floor.

(Were this encounter a normal one, I would say roll for initiative. For now, I'll just try and keep everyone getting a fari number of turns in - the more you do, the more the statue do!)

When Kay sees the statue she says, "Wow that looks like my mom. Huh, I didn't know she had a statue." When the statue moves and snarls at Harmony, Kay says, "Now it really looks like my mom! Sounds like her too!" She waves and shouts, "Hi Mom! Long time no see!" With her other hand she grabs the hilt of her rapier. (She legitimately thinks this is a statue of her mother, who she never got along with.) She will also try to investigate the door that the statue was looking at.

Investigation8

Perception 4

wow those rolls were terrible, guess she was distracted

Alexander scans the room, trying to make sure that no one is in any immediate danger of being crushed. Noticing how close Harmony is to the statue, he shouts "Harmony look out!" Then he runs to confront the statue attacking with his longsword once he gets into melee range. 

To hit: 20

two handed attack: 9

Harmony casts shatter as a 3rd level spell on the statue. Save DC 16 Fail: 18

Angelino will say “I have magic powers, i know it’s quite amazing, so come to me if you need healing peasants.” Angelino will then start to clean up a patch of the floor to sit on.

This 'peasant' may need to take you up on that soon.

On her same turn, Harmony will also use her movement to move away from the statue. (Unless disengage is required. If it is- no movement and hope for the best)

hello fellow humans we hav- i mean i have come to tell you about the new signature i have gained. you can learn from it, it will help you, you will feed it, it will feed you. this is the end of our- i man my interruption. carry on with this "forum-game"

I Slap The DM Then Move Forward

Quote from Rynn_Elocin >>

When Kay sees the statue she says, "Wow that looks like my mom. Huh, I didn't know she had a statue." When the statue moves and snarls at Harmony, Kay says, "Now it really looks like my mom! Sounds like her too!" She waves and shouts, "Hi Mom! Long time no see!" With her other hand she grabs the hilt of her rapier. (She legitimately thinks this is a statue of her mother, who she never got along with.) She will also try to investigate the door that the statue was looking at.

Investigation8

Perception 4

wow those rolls were terrible, guess she was distracted

The door looks very heavy and solid, with 4 heavy bars holding it closed.

Quote from Aroc_of_Eaf >>

Alexander scans the room, trying to make sure that no one is in any immediate danger of being crushed. Noticing how close Harmony is to the statue, he shouts "Harmony look out!" Then he runs to confront the statue attacking with his longsword once he gets into melee range. 

To hit: 22

two handed attack: 12

Your attack scores a bright scratch through the dark surface of the statue, which otherwise seems basically indifferent to the results. You have just enough time to contemplate the ramifications of this before the statue swings a backhand at you;

Attack: 32 Damage: Unable to parse dice roll. for bludgeoning damage, and if the hit succeeds, you'll be flung 20ft. back the way you came by the impact, so make a dexterity save (acrobatics or athletics, your choice) to stay upright!

Quote from UndauntedDM >>

Harmony casts shatter as a 3rd level spell on the statue. Save DC 16 Fail: 20

Saving roll (with disadvantage, as it's bronze): 15. The bronze leviathan rings like a gong, but doesn't miss a beat. She smoothly swings from backhanding Alexander to directing a kick at Harmony;

Attack: 31 Damage: 13

If it hits, it'll be the same effect - knock you back 30ft. (alexander's in heavy armour, so he went less distance) and dex save to stay upright!

Quote from UndauntedDM >>

This 'peasant' may need to take you up on that soon.

On her same turn, Harmony will also use her movement to move away from the statue. (Unless disengage is required. If it is- no movement and hope for the best)

Disengage would have been needed, but luckily the statue may have taken care of that for you, if it hit!

Quote from Adiven_Voidic >>

I Slap The DM Then Move Forward

You gain Unspiration, which is where the DM can choose to impose disadvantage on a single roll!

The statue takes some more ponderous, booming steps towards the group.