Petro, seeing the ravens are pretty much covered, unleashes another dissonant whispers on the spined thing that isn't unconscious. DC 15 wis save, or 7 psychic damage.

(I think I'm up)

Ondrea swings her mace again at the last raven.

Attack: 10 Damage: 2

Then directs her spiritual weapon to move and attack the last raven as well.

Attack: 15 Damage: 7

(last? There are still 3 ravens, one by Kra-osh/Petro, one by you and one by Louisa/Ramos)

Wis save 21 

(I meant the last one by me, sorry)

Quote from Swiftgale >>

(last? There are still 3 ravens, one by Kra-osh/Petro, one by you and one by Louisa/Ramos)

Wis save 21 

 Half damage and doesn't have to move away from me

It stays up barely (the raven and the spined)

Ravens: the one on Ondrea turns invisible and you hear it flap away (you can make an attack of opportunity with disadvantage)

The one on Kra-osh will dash away due to being turned, Petro (if he has a melee weapon out) and Kra-osh get at attack of opportunity

Against Ramos Attack: 10 Damage: 3piercing +15 poison (halved on DC11con save) 

Ondrea swings her mace blindly at the invisible raven.

Attack: 14 Damage: 9

(Petro wouldn't have drawn yet. He will, however, yell for some of the others to help him tie up the other spined thing before it wakes up.)

(you know that damage wakes them up, it looked like a damaging fall and it didn't wake up. It is dead) 

(Well I was hoping...) 

(So just ravens left? Also who is up next?)

One spined thing up and injured, the one who got sleeped is dead. Louisa is up, as is Kra-osh, Aiden,  and Ramos (I will do Louisa's turn after the others)

Aiden will once again attempt to finish off the spined creature in the forest. (This time without sharpshooter)

Attack: 19 Damage: 11

(Well then, not the best start for this character)

Ramos charges down the remaining spine creature, lightning crackling off his form. One larger bolt shoots towards the creature as he channels Storm Aura. If he can get within range, another strike from the trident comes swinging towards the creature as a follow-up

Bonus Action: Storm Aura. Target makes a DC 14 Dex Saving Throw, taking 4 lightning damage on a failure and half on a success. 

Action: Attack!

Attack: 23 Damage: 7

Kra-osh doesn't take the opportunity attack, he also motions for Petro to do the same.

Kra-osh will find a nearby ’raven’, excluding the turned one, and attacks it with his longsword (If he can't find one, he'll attack the spine creature)

Attack: 19 Damage: 10

Update coming in my lunch break, for now, the spined creature can't be reached by melee. Kra-osh can attack the one attacking Ramos, if Ramos charges towards the spined creature, the raven will get an attack of opportunity (unless it dies first, I will have to check the actual initiative order but I think Louisa goes first, not sure where Kra-osh fits in but he hits)

If the spine creature can't be reached by melee, then Ramos will use his trident to hit the raven before charging.

Louisa will also attack the raven. Attack: 19 Damage: 9

The raven turns back into another one of these red winged creatures with a scorpion like tail as it collapses to the ground

Spined creature dex for storm aura, 3 

The spined creature is just about in range for a blast of lightning, which blast through its body, before it collapses to the ground.

From initiative order: Ramos attacks and then runs to the spined creature, the raven gets an AoO: Attack: 8 Damage: 7 (piercing, so will be halved from rage)  DC 11 Con saving throw, taking 5 poison damage on a failed save, or half as much damage on a successful one.

Then Louisa swings and damages more, and then Kra-osh kills it.

Unless someone has a way to see an invisible creature, combat is over and we are out of initiative

Assuming someone goes to inspect the bodies, picture these, but dead (yes the spine creature is roughly double size).

 - Dead "Raven"     - Dead Spine creature

Ondrea hurries over to check over Petro's wounds for any signs of disease, poison or other further ill effect.  Are you alright?  She then calls out to the group, Is anyone else injured?

Medicine: 21