Mansion Round 2:

Swigg clambers atop the statue and his hands begin to glow with purple energy.

Denka holds fast and prepares to freeze solid her opposition.

Scarab moves to the statue but cannot reach Swigg (he is 10 ft above you). Swigg stands motionless, not registering Scarab's appearance.

Silvian moves forward and continues to be stealthy 13

(Denka and Swigg are up)

Swigg shouts from H13 "I'm sorry for doing this to ya bro. But I gotta give ya my best shot." 

Beads of sweat drip down his forehead as Swigg shredds on his guitar. At the apex of his solo his fingertips glow with heat and Scarab's plate armor begins to do the same Heat Metal 4

Then Swigg will hit a high note in the shadows Hide Stealth 15

(Do I need to make a CON Save?)

If yes: 13 + Inspiration: 3

Also not sure how stealth is handled here, but if I may contest: 14

Will going through the doors to get line of sight take my action? Or do we get 1 free a turn?

(You may open one door/window or draw/sheath one weapon for free in a turn)

(Scarab does technically need to make a Con save but since you can't drop the armor the point is moot)

(Stealth is contested with passive perception always and active perception as an action)

Mansion Round 2:

Swigg pops out from behind a tree and the crowd (Scarab) starts to heat up. He then runs away to prey on his enemies some more.

(Denka is up. After Denka goes... 2 2)

   A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P
16  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
 ===================........=====================
15  .  .  .  .  .  =  .  .  =  .  .  .  .  .  .
 ..................=........=....................
14  .  .  .  .  .  .  .  .  %  .  .  .  .  .  .
 ..................==========....................
13  .  .  .  .  .  %  & !&  %  .  .  .  .  .  .
 ..................=........=....................
12  .  .  .  . !.  =  &  &  =  .  .  .  .  .  .
 ...............====........====.................
11  .  .  .  .  =  .  .  .  .  =  .  .  .  .  .
 ............====..............====..............
10  .  .  .  =  .  .  .  .  .  .  =  .  .  .  .
 ======%.=====....................=======%%======
09  .  .  .  .  .  .  ++++  .  .  .  .  .  .  .
 .....................++++.......................
08  .  .  .  .  .  . Q++S+  .  .  .  .  .  .  .
 ======%%=====....................=======%%======
07  .  .  .  =  .  .  .  .  .  .  =   .  .  .  .
 ............====..............====..............
06  .  .  .  . D=  .  .  .  .  =  .  .  .  .  .
 ...............====........====.................
05  .  .  .  .  .  =  &  &  =  .  .  .  .  .  .
 ..................=........=....................
04  .  .  .  .  .  .  &  &  %  .  .  .  .  .  .
 ..................==========....................
03  .  .  .  .  .  .  .  .  %  .  .  .  .  .  .
 ..................=........=....................
02  .  .  .  .  .  =  .  .  =  .  .  .  .  .  .
 ===================........====================
01  .  .  .  .  .  .  .  .  . !.  .  .  .  .  .
   A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P

Key: '=' Wall (15 ft), '.' Marble floor, '+' Statue (10 ft), '%' Door, '&', Tree (15 ft, provides half cover)

Assuming Q is scarab because I can't be bothered to go back and read, Denka moves to be next to Scarab and grabs hit metal armor to give him a shocking grasp  Attack: 21 Damage: 3

She reaches deep into her small well of power to quickly cast a second shocking grasp Attack: 22 Damage: 2

(Since i dodged, advantage cancels out and neither shocking grasp hits.)

(Also I wouldn't have used my inspiration if I knew succeeding on that save did absolutely nothing.)

(Hey futuristic, I know this spell sucks. Grianne used it against me and I had a meltdown. All the same, all your attacks and skill checks have disadvantage while your armor is lit) 

(Denka, do you move through the door between C7 and C8 or the one between F4 and G4)

(Also, twinned spell designates a second creature as the target, so you cannot attack the same person twice)

Quote from Keneux >>

(Hey futuristic, I know this spell sucks. Grianne used it against me and I had a meltdown. All the same, all your attacks and skill checks have disadvantage while your armor is lit) 

 (Not if he passed the Con save, which is the same ruling that should have applied with Grianne.)

(Edit: I see she used it on Shmitty in the Dueling matches. I didn't catch at the time that you didn't roll the save and took disadvantage.)

(Here's the first event where I ruled on it way way back. Even with this ruling it's still one of the best second level spells.)

Quote from Persuasion >>

... (Also, twinned spell designates a second creature as the target, so you cannot attack the same person twice)

 (I believe that was Quickened Spell.)

(Twinned Spell Text)

When you cast a spell that targets only one creature and doesn’t have a range of self, you can spend a number of sorcery points equal to the spell’s level to target a second creature in range with the same spell

(Heat metal still gives disadvantage as long as you don't drop the item. If you fail the Con save, you must drop the item if you can, but either way you still have disadvantage if you are in contact)

the creature must succeed on a Constitution saving throw or drop the object if it can

If it doesn't drop the object, it has disadvantage on attack rolls and ability checks until the start of your next turn.

(Umm which parent do I listen to? I mean I agree with persuasion which is why I wasnt aggro about having disadvantage when I fought Grianne...but I want Scarab's con save to matter.) 

(The con save seems to be "can you grit your teeth and hold onto the item", which could be extended to not having disadvantage on a success, but RAW the con save only matters if you can feasibly drop the item)

(I think he's saying she quickened it, not twinned it.)

(Your house your rules. Persuasion's ruling will stand here.)

Doesn't really matter to me which way Denka went, and I quickened as twinned wouldn't work as I dont have a 2nd unique targer.

And I want heat metal to work which ever way the DM says. No pressure :D

(You gotta pick tho, it's important for... unpleasant surprises)

(Heat metal will work RAW, Scarab has disadvantage regardless of the save)

Quote from Keneux >>

(Hey futuristic, I know this spell sucks. Grianne used it against me and I had a meltdown. All the same, all your attacks and skill checks have disadvantage while your armor is lit) 

 (Actually it's not that bad, while this spell is pretty cool and effective, it also has some disadvantages, although Swigg is able to use it particularly effectively. It's a fairly balanced spell over all imo, as long as you have some way of dealing with it (which I don't right now, but that could change). Guess I just need to be a warforged next time!)

(@Futuristic Time for some sweet, sweet Cast-Off Armor Set?)