Round 1!

Bullgup embarrassed by his carelessness in his own land grabs his new short bow with an apparent familiarity and smiles a frogish grin as looses an arrow at PB2

Attack: 22 Damage: 7

Translation of abyssal

 Combat Tracker:

 Map (Now with grid lines!) Remember this is all difficult terrain.

 Daventry and Triäsa are up!

As Daventry stalks up the treeline, she realizes the marshy terrain is going to be a problem, and straps her shield around her back, pulling out her longbow, quiver, and arrows from Thavol's pack.

She prepares to shoot her bow for the ambush, when Bullgulp makes his mistake.

"Let them come to us, then! Stick to the treeline!" She whispers sharply to the group, loosing two arrows at the same target as Bullgulp. She takes a step back into the treeline, attempting to get cover from return fire, motioning for Bullgulp to do the same (if he can still use his movement).

Attack 1: 20 to hit, 6 damage.

Attack 2: Nat 1 :(

Triäsa quickly reacts to the sudden attention from the Pure-bloods.  Calling out arcane words she fires a Force Bolt.  
(Spell Attack: 15 Damage: 7 force)

She copies Daventry and tries to step back into the treeline for cover as well. 

(Not sure which target Daventry was targeting. Triäsa targets the closest - PB4) 

(I shot the same target as Bullgulp, PB2)

Bullgup's arrow sticks deep into the pureblood's hip and is quickly followed by a second arrow to the other hip by Daventry. 

Triäsa strikes PB4 in the chest as she easily slither toward the nearest building taking cover before taking aim at Triäsa and unleashing an arrow as a violent rebuttal. Black venom drips from the tip as it flies.

Attack 22 Damage: 4 piercing + 11 poison

As her arrow flies the creature calls out in abyssal, "Take cover. The rest will come and then we shall have new toys!"

Ludolf is up!

Combat Tracker:

 Translation:

Ludolf snarls and calls upon his eldritch powers, his piercing gray eyes flashing with anger as a painful blast erupts among the Yuan-ti.

Bonus action: Place Hex on PB1
Action: Cast Shatter, Thunder: 17 Con 16 for half, hopefully catching all 4 if PB4 moved northwest to PB1 which should be the closest building.

He then steps back into the treeline for cover as well and asks Edgar for an update on the other patrol.

The Purebloods' skin shimmers as your magic rings out very loudly across the marsh. You'll be able to get three of the four PBs will update the map with next post. I meant he moves the building closest to you all. 

PB1 2 

PB2 4 

PB3 10 

(Wow those were some terrible rolls.)

You magic pounds into snake ladies ears and blood starts running from their ear holes.

PB2 fires an arrow at Bullgup while PB 3 launches one at Ludolf and snarls in common, "Thanks for sounding the alarm old man." Afterr firing their arrows both snakes retreat behind the building and out of sight. (Complete cover from the tree line.)

@Ludolf

Attack: 9  Damage: 3 piercing + 9 Poison

@Bullgup

Attack: 11  Damage: 7 piercing + 8 Poison

Edgar initially relays to you the other patrol was slowly making their way to your location on it's regular rounds, however, as your spell rings out in the air they began dashing in your direction. They will be at your location in another 12-18 seconds. They approach from the southwest.

Map:

Combat Tracker

As they all emerge from the water and are immediately engaged in battle, there is a light pop sound and standing beside them, everyone sees Pardot, back in his normal form, surprisingly dry as they drip with cold water, assessing the situation. As ranged spells and arrows fly in all directions, Pardot covers the flame on his staff as a fog cloud ((upcast to level 2, so it's a big cloud)) engulfs the area around he and his companions, effectively hiding the group while the snake folk themselves attempt to hide behind the shelters.

The Pureblood's arrow flies straight into Bullgup's throat. A grotesque noise followed by alot of blood spew from his mouth as he drops to the ground, dead. (That was exactsies on damage. Poor frog)

Fortunately the other arrow misses Ludolf by a fair margin.

The fog then pours forth from Pardot's staff creating a sphere of thick smog 10 feet in front of the party and extending back, deep into the forrest.

One of the Purebloods calls out into the fog in common, "The fog and the darkness are not your friend but ours intruder." 

An uncomfortable silence follows. So long as you are in the fog I will not update the map or give you any details outside the fog. 

Round 2! Daventry and Triäsa  are up!

Combat Tracker

The shimmering, wavering aura surrounds Daventry once more as she sprints to the building to the south, moving clockwise around it, dropping her bow and drawing her blade. 

BA: Shield of Faith

Action/Move: Dash to try and get clockwise around the south side of PB2

Daventry negotiates the fog and prepares for whatever fresh hell awaits her outside Pardot's clouds. You are still within the fog and think you are just even with the southern most portion of the building PB4 is hiding behind. Unless you continue south and hug the tree line your next move will take you out of the fog.

Triäsa is up!

Triäsa  cries out in pain as the arrow and black poison from the pure-blood's shot hits hard.  She moves slowly, in the same direction as Daventry (standard move only), trying to stay within the fog.  She casts Cure Wounds on herself. (heals 9 hp) 

The pain quickly subside as your spell's energy courses through the wound and cleanses the venom from your blood. The two of you creep slowly along the fog to the enemy's flank.

Again an eerie silence fills the air as the stand-off continues.

Ludolf is up

A bit confused for a brief moment by the fog suddenly appearing, Ludolf strides southwest and as he comes out of the fog he spots the Yuan-ti he hexed (PB1), blasting her with his gray piercing eyes.

Eldritch Blast: 27 Another roll if advantage for starting the turn hidden by the fog: 11 Force: 9 Necrotic: 1
Eldritch Blast: 10 Another roll if advantage for starting the turn hidden by the fog: 26 Force: 14 Necrotic: 6

He then proceeds to take cover behind the hut to the southwest.

(I don't think you would have advantage after leaving the fog for an attack unfortunately. The snakes are well aware you are in there and have all their attention on the fog line waiting for you to poke out)

Ludolf emerges from the fog ready to strike. Unfortunately for him the Purebloods are equally ready as PB1 and PB4 have their bows trained on the fog line waiting for the first of you to emerge triggering their ready action

PB1 Shortbow attack: 9 Damage: 5 Piercing + 3 Poison

PB2 Shortbow attack: 6 Damage: 4 Piercing + 8 Poison

As the arrows sing toward Ludolf his magic flies through the air at PB1. The first blast crashes into the snake's chest while the second misses hitting wall of her cover.

The arrows fly harmlessly into the fog. As Ludolf retreats back into the safety of the mist he notes none of the position of the combatants has changed. 

Ludolf roll perception for Edgar

Again silence as PB2 and 3 take their turn.

Pardot is up!

Though the fog inherently only disrupts sight, Pardot notices the silence that seems to follow, hearing very little from the snake-folk, nor from his own companions. Keeping his concentration he raises his shield and pops his head out of the fog, just enough to see where everyone is, and then, disappearing back into the mist, tells everyone what he sees.

The first thing Pardot sees is a arrow flying directly at his face as PB3 releases her readied attack. He then notices that the PBs have shifted their position just slightly and one of them seems to be fleeing to the west.

Attack 17 Damage 2 Piercing + 10 Poison

Map

Combat Tracker

Round 3 Daventry and Triäsa are up