Kierro runs to E6 and fires burning hands, (making sure that the left edge of the 15 ft fire cone hits the animated bushes at D5, C4, and B3, but doesn’t hit Damaia.)

DC 13 dex save, 7 fire damage on fail or half on success.

”I’ll incinerate you all at once!”

Damaia tires to kill the small shrub that attacked her, so that she can focus on the dead bushes that showed up. "What the **** is up with this place? Now I've got undead plants trying to kill me."

Dagger attack: 13 Dmg: 6

EDIT: Ninja'd. Holding off on taking this turn until I figure out how many stuff survived the Burning Hands.

Kierro's burning hands annihilate all the plants it caught in its range, leaving them writhing in pain. Now exposed, you can all see the little creature at C3. 

(Who do you want your attack to go to Damaia? You'd have to move to reach the creature at C3)

If there are no enemies, withing 5ft of Damaia, she will move to the East as far as her movement takes her (but staying away from shrubs and bushes) and hurl an Eldritch Blast at the creature. This smokey ball of dark green Eldritch energy looks much bigger and more menacing (I took Agonizing Blast) than all her previous balls,

Eldritch Blast against the creature: 13 Dmg: 5

EDIT: Rolled wrong damage dice: 5

Damaia hurls her Eldritch Blast at the creature attacking Raza, the blast connects and rips away part of the creature's torso, but the creature remains standing. 

Raza's turn

Raza will move up C2 and slash at the creature with his short sword and dagger. "Let's end this.."

Atk: 19   dmg: 5 

Bonus action: 25     dmg: 7 

Raza stabs into this creature and it falls, but as soon as it does, the bush underneath him attempts to rake across his body. 

Attack: 20 Damage: 3

The dead shrub to Raza's left makes an attack as well.

Attack: 11 Damage: 2

The Kid's turn. 

The Kid shoots at the dead shrub next to Raza. I got this! 

Attack: 14 Damage: 11

The Kid's shot sends the creature to the ground, dead. Too bad one of the tiny creatures that attacked Raza uses the opportunity to try and sneak up on The Kid. Luckily The Kid saw the attack coming at the last second (no advantage).  Attack: 6 Damage: 7

Damaia turns just as another one seems to have made it's way out of the bushes and attempts to claw at her. Attack: 10 Damage: 3

Both Kierro and Damaia can have their turns.

”I wonder if...”

Kierro turns and blasts the tree with Sacred Flame.

DC 13 dex save, 8 radiant damage on a fail (if, indeed, Kierro has the right idea about what he’s attacking)

The tree screams in pain and takes the full force of the spell. Suddenly almost everything comes alive looking angrily at Kierro.

Kierro grins.

To himself, quietly: “I knew it.”

Loudly: ”Alright. Come at me, then!” He thrusts his arm/shield into the air. “COME AT ME, THEN!”

Okay, so I'm guessing EVERY shrub and bush is alive.

Damaia kicks the claws away (it didn't hit) with her heeled boots as her hand begins to glow again. She moves south west, allowing the small creature a second chance to strike her. She gets into position before pointing her now white hand at the large group of shrubbery at the south west section and a column of fire erupts from her palm, swaying and engulfing the plants as she moves her hand. (Burning Hands to get as many enemies in the cone as possible. It doesn't matter which enemies are affected as long as the number of enemies effected is the highest possible.) Damage: 12 Fire Damage. DEX 13 for half.

(I changed the map to show all the creatures that came to life)

The creature will use the opportunity to try and claw you. Attack: 19 Damage: 7

(Please try to specify what spot you're going to next time. I don't like to guess where I think you mean.)

Damaia moves up to G5 and flame erupts from her hands. She catches one dead bush that has come alive in front of her as well as another awakened shrub and one of the small creatures that attacked her. Both the dead bush and the shrub are incinerated, but the small creature yelps in pain and looks to Damaia angrily. 

Raza's turn. 

(Okay. Will do. Can Damaia drink her potion as part of her bonus action from the previous turn? 9)

(Due to your new belt, yes)

Damaia quickly draws her potion from her belt and downs it. An faint, almost invisible black smoke swirl around her (I killed two enemies so I get 5 Temp HP)

Raza slashes at the shrub in front of him (C3). Then using Cunning Action to disengage, he runs for G1 yelling to the others "We need more fireworks!"

Atk: 9     Dmg: 5 

Raza lashes out with a wild swing and it just connects with the creature, but its foliage seems to cushion the blow.

The dead shrubs near The Kid converge on him and each attempt to claw at him. 

1. Attack: 8 Damage: 4

2. Attack: 16 Damage: 5

While the dead shrubs in the south western corner converge on Damaia and attempt to do the same. 

1. Attack: 13 Damage: 4

2. Attack: 18 Damage: 2

At the same time the other bushes begin moving toward their targets. The bushes in the upper corners all start to surround Kierro, but only two make it to him and attempt to rake him with their twigs. 

1. Attack: 10 Damage: 2

2. Attack: 12 Damage: 1

The bush next to The Kid will attempt to hit him 

Attack: 4 Damage: 2

And finally the bushes in the bottom left corner move up on Damaia. One reaches her and slashes at her. 

Attack: 3 Damage: 1

The Kid's turn.

The Kid nimbly avoids all attacks, except for 1. That’s how you wanna play, huh? I won’t waste ammo. Let’s go! He draws a silver and blue baseball bat (war pick) from his pocket, and starts chipping away at the bush next to him.

Attack: 18 Damage: 8