Initiative Order

Ochori Cultist - 17
Luxaene - 16
Lazarus - 16
Hush - 15
Holden - 14
Derek - 8
Small Slime (near Holden) - 7
Small Slime (near Cultist and Hush) - 2
Forming Slimes - N/A

Your move, Luxaene and Hush.

Acting on the behalf of Luxaene and Hush. Are y'all there? 

The Halfling takes two more cracks at the Ochori's images. 
Attack 1: 14 Damage: 8 
Attack: 25 Damage: 6
Luxaene blasts the still-forming Slime!
Attack: 10 Damage: 3

The Small Slime near Holden takes another slam at the Half-Orc. Attack: 11 upon hit, make a DC 10 Con save or 6 poison damage.
The Small Slime near Hush wriggles away, attempting to slam the problematic wizard the Cultist is dueling!
Attack (against Lazarus): 20 upon hit, make a DC 10 Con save or 5 poison damage.

Hush may make an opportunity attack against the escaping Small Slime conjured by the dissipation of one of the images.

Hush's first strike hits, but the second one unfortunately barely misses. Mirror Image roll - 13 - The Halfling manages to strike the Cultist dead in the chest! It looks like he's on his last legs!
Luxaene's strike sinks into the unmoving slime, and it collapses into a pile of purple mush. Unlike Holden's swings, it appears that killing forming slimes prevents it from gathering enough power to split after being defeated. 

Roll for Forming Slime near the Cultist - 1

The Ochori Cultist seems confused and disoriented, but all remaining images seem to turn around and focus on a center in the ground. They all lean forward, and another spark of arcane energy begins to brew on the ground before them.

The Slime has formed! Initiative - 12

 Initiative Order

Ochori Cultist - 17
Luxaene - 16
Lazarus - 16
Hush - 15
Holden - 14
Derek - 8
Small Slime (near Holden) - 7
Small Slime (near Lazarus) - 2
Slime (near Cultist, Hush, Derek) - 2

Feel free to make your moves.

(OOC - sorry. I'm not getting email notifications anymore for some reason and notifications aren't showing up properly online either.)

Luxaene lets fly another blast at the newly formed slime!

Eldritch Blast
Ranged Spell Attack: 13 Damage: 10 (force)

At the last moment, Lazarus brings up a shield to block the Slime's blow, though his shield is shadowy black compared to the moss green of the Cultist. A tinge of frustration is in his voice.

"Let's get this over with!" 

He casts Toll the Dead once more at the cultist, before drawing his scalpel in preparation to engage the troublesome slime. 

DC 14 WIS Save or 7 damage

Hush grins as he sees the cultist struggling, even as the new slime emerges. He jumps up, bringing a spinning kick down on the cultist's knee followed by a blow to the jaw with a fist.

Attack: 20 Damage: 7

Bonus Attack: 7 Damage: 6

Switching to group initiative, coming into effect after those who need to take their action do so. 

Luxaene's spell sinks into the newly-assimilated Slime near the center of the fray! 
Cultist's Wisdom save - 21 - the Cultist ignores the ominous sound of a tolling bell!
Both of Hush's attacks hit! Final Mirror Image rolls - 16 19 edit: I misread something on Mirror Image - only one roll needed to be made, but the result is the same. Your first strike sinks into the final mirror image, causing it to collapse into a pile of mush, only to strike the final, true image of the Cultist! With a snap, the Cultist's head jerks to the side, and he collapses!
Derek goes to strike the final Small Slime next to Holden with an arrow! Attack: 7 Damage: 16 - unfortunately, the arrow flies past the Small Slime, embedding itself deep into a tree!

Holden, your move.

Another Small Slime has appeared where the final Mirror Image was vanquished. 

 Initiative Order (Updated to Grouped Initiative)

Luxaene 
Lazarus 
Hush 
Holden 
Derek 
Small Slime (near Holden) 
Small Slime (near Lazarus) 
Slime (near Hush, Derek) 
Small Slime (near Hush)

Holden slashes towards the other slime next to him with his axe.

Attack: 8 Damage: 13

Holden's attack sinks into the soft dirt next to the gelatinous blob.

The Small Slime near Holden retaliates with a slam. Attack: 15 upon hit, make a DC 10 Con save or take 4 poison damage.
The Small Slime near Lazarus will make a similar slam attack. 13 upon hit, make a DC 10 Con save or take 5 poison damage.
The fully-formed Slime will attempt to attack Derek. 17 upon hit, make a DC 12 Con save or take 6 poison damage.
The Small Slime near Hush will attack him! 12 upon hit, make a DC 10 Con save or take 8 poison damage.

 Derek's Con save - 16

Your turns can begin! 

Holden Con Save: 6

Holden grunts in anger and mild pain, slashing towards the slime again.

Attack: 12 Damage: 8

Hush dodges out of the way of the small slime's attack. He quickly retaliates with a kick, trying to flick the slime up in the air to then punch it as it floats up.

First Attack: 19 Damage: 8

Second Attack: 10 Damage: 8

(Mobile. Excuse the lack of formatting.)

Holden’s swing neatly carves the small slime in two, rendering it no more than a pile of slush!
Hush’s attacks pummel the small slime, causing it to disintegrate into an unmoving mound of purple!
Derek will Disengage from the Slime and head back a few feet after recoiling from the blow!

Lazarus, Luxaene, your move. 

Luxaene maintains her distance and aims another bolt of the arcane towards the deadly slimes!

Eldritch Blast
Ranged Spell Attack: 22 Damage: 8 (force)

Lazarus will shift his focus to the slime assaulting him, swiping at it with his dagger. 

Attack: 6 Damage: 2

Luxaene's blast rockets into the larger Slime near the center of the fray. Unfortunately, Lazarus fumbles with his dagger, missing entirely. 

The Small Slime near Lazarus retaliates with yet another slam attack: 19 upon hit, make a DC 10 Con save or take 6 poison damage.
The final Slime will respond to Luxaene's blow by splitting, sending what seems to be the final two Small Slimes in different directions - one at Luxaene, the other at Holden.
Against Luxaene - 18 upon hit, make a DC 10 Con save or take 6 poison damage.
Against Holden - 11 upon hit, make a DC 10 Con save or take 4 poison damage.

Feel free to make your moves.

(I forgot the last Con Save)

Con 1: 17

Con 2: 23

Lazarus is struck by the small slime and sent reeling! He struggles to recover and disengages from it, moving 30 ft. away from the fray in the hopes the slimes are too slow to catch up. 

"I need some assistance here!" 

CON Save - 6

Luxaene continues to use the effective method of dealing with the slimes, the horrible sensation from the attack leaves her unable to focus...

Eldritch Blast
Ranged Spell Attack: 9 Damage: 7 (force)

Hush runs at the nearest slime, jumping up to bring the full weight of his body down through both his fists.

First Attack: 8 Damage: 6

Bonus Attack: 10 Damage: 8

Holden will take what is hopefully a final axe strike at the small slime engaged with him. 

Attack: 10 Damage: Unable to parse dice roll.