Bart pumps his fist and backs out of the way now that his part is over

Cariadne checks the door for traps before trying to open it. investigation 14

Barbär, not being an arcanist in the traditional sense, casts identify on the other workings of the door

Marigold is primarily waiting for the results of the identify spell---Her magic is all natural, and she doesn't really have anything prepared that'd help with doors in particular this day. Unless it's locked, in which case she -could- do something with the right tools. 

It’s locked, but not trapped.  Identify tells you it’s a spoken password lock powered by divine magic of the Anwynian faith.

"The door needs a password, something to do with Anwyn or the faith. Ermm.. "May Anwyn guide me"?" Barbär blurts out attempting a phrase, sweat dripping from his forehead

Does Cariadne know anything about Anwyn? religion 6

Quote from valeskah >>

Does Cariadne know anything about Anwyn? religion 6

Clearly not, as it is a relatively new faith. You do realize from your investigation earlier that you stand a good chance of getting the mechanical part of the lock to unlatch even without the password, given a decent thieves' tools roll.

Marigold would like to give Cariadne guidance if she does attempt to pick the lock. Though she is capable of picking locks herself, being proficient with thieves tools, it's not really an activity that can helped with to give advantage probably.

Can Marigold roll religion?

Yes, feel free to roll religion.

Cariadne stoops down and wields her lock pick set to attempt to open the lock. She grunts in thanks for Marigold's guidance. 

11 plus 1 guidance. 

Unfortunately, you are unsuccessful.  You may attempt it again, of course, it will just eat up a few more minutes.

Sadly, only a 12!  But will give guidance again to our lockpicker. 

Cariadne grits her teeth, trying not to let the others see her sweating through her swagger. "Tricky, tricksy, very tricksy..." she mutters as she attempts the lock again. 

23 plus 4

Phew!

The lock mechanism releases and the door swings inward, opening automatically. There is a small humanoid tied to a chair facing away from you, a glowing crystal orb in front of them displaying some sort of images. A small devil, larger than the imp upstairs, lurk in the far right corner of the room. It was ready for the opening door and fires a tail spine at Cariadne, striking her and the spine explodes in a flash of fire. [[Hit AC 24 for 5 piercing and 6 fire damage]]

Everyone roll initiative, you may act if you beat their roll of 5.

[[Edit: removed one spined devil from combat.]]

Ouch!

Initiative: 12

Cariadne grabs her crossbow and aims it at the devil, firing off a shot. Attack: 15 Damage: 5

She then takes a Cunning Action to hide beside the doorframe out of sight from the devil.

She furiously mutters to the others, "I should have thought of that! Sorry, didn't even think of listening at the door first."

Trading spine for arrow, the devil takes a solid hit to the shoulder.