Zoveldra struggles to escape the gelatinous mass but to no avail. The acid burns her further.

Athletics: 3, takes 12 acid damage.

Cube 2 CON Save: 11

LANDMOP and his skeletons attack Cube 1 from afar, as Erix backs up his snake, blowing Cube 2 back 10ft. Zoveldra is thrown back with the cube, unable to struggle out of the ooze slowly digesting her. Elero shoots a bolt at Cube 1, and the ooze collapses into a puddle. 

Cube 2, still with Zoveldra inside it, is able to (I worked out the math) move 15 ft toward the snake, then use it's engulf ability on both the snake and Erix.

Erix DC 12 DEX save or Engulfed: 12

The snake will need to make the same save.

Engulf:

The cube moves up to its Speed without provoking Opportunity Attacks. The cube can move through the spaces of Large or smaller creatures if it has room inside itself to contain them (see the Ooze Cube trait). Dexterity Saving Throw: DC 12, each creature whose space the cube enters for the first time during this move. Failure: 10 (3d6) Acid damage, and the target is engulfed. An engulfed target is suffocating, can’t cast spells with a Verbal component, has the Restrained condition, and takes 10 (3d6) Acid damage at the start of each of the cube’s turns. When the cube moves, the engulfed target moves with it. An engulfed target can try to escape by taking an action to make a DC 12 Strength (Athletics) check. On a successful check, the target escapes and enters the nearest unoccupied space. Success: Half damage, and the target moves to an unoccupied space within 5 feet of the cube. If there is no unoccupied space, the target fails the save instead.

You all are up, the last standing Gelatinous Cube is trying to engulf and digest multiple people, currently succeeding with Zoveldra.

Elero takes another shot at the snake, and the Protector Cannon will give 10 temp HP to anyone not engulfed.

Light crossbow attack: 20 to hit and 12 damage

Snake dex save: 8, engulfed again.

Snake strength check: 22; it get's out again on the otherside of the snake as Erix is.

Erix than throws another thunderwave it, towards a side; not where the snake is.

DC16 con save or take 8dmg and be pushed 10ft backwards.

((Also, Elero I assume another shot at the cube, not the snake?:P))

@DM would the bear spirit work for creatures inside a cube?
"The bear spirit grants you and your allies its might and endurance. Each creature of your choice in the aura when the spirit appears gains temporary hit points equal to 5 + your druid level. In addition, you and your allies gain advantage on Strength checks and Strength saving throws while in the aura."

Zoveldra once again attempts to escape but fails. She forces herself to stay calm and focus on healing as much as she can.

Action: Athletics: 4, takes 5 acid damage.

Bonus Action: wholeness of body for +8 hp

((btw Zoveldra; I believe you can still attack the cube you are in; "just" at disadvantage))

LANDMOP sends the skeletons in to drag Zoveldra out. 

[roll]1d20[roll]

8

And another blood Bolt

Attack: 14 Damage: 10

(oops one more for skeleton 1) athletics

4

Quote from Secretfool >>

((btw Zoveldra; I believe you can still attack the cube you are in; "just" at disadvantage))

 ((Oh -.-;; I'll do that next round.))

Yep, sorry.  Shooting at the cube.  Elero's not that freaked out.  :)

Your efforts defeat the last Gelatinous Cube, it turns to a puddle on the ground, freeing a now very sticky Zoveldra. The guards thank you for your efforts, but they and the people around the market quickly go back to their business, clearly unfazed by the ooze attack.

Erix notices a young female Deep Gnome with a shaved head and brown robes looking at you intently from a place over the other side of the market square. He can tell by this woman’s aura that she is a Druid like himself, possibly aligned to some Earth elemental power.

Will you speak to the Druid or are you still all going to check out the mushroom filled Cultivation Caves?

Erix wasn't much interested in the mushrooms, and thus walks up towards the young gnome.

"Hi there, how are you?"

Elero will follow Erix, also more interested in the gnome who seems interested in us.

LANDMOP will follow as well, undead in tow

The younger female gnome tries to shy away at first, but Erix' fluency in Druidic, and the other's willingness to talk helps her to open up. "Hello, my name is Nomi, and like everyone in this city, I am not well. In case this event hasn't proven it to you, we are not safe in this place, and the more we go on the more it seems everyone is ok with that. With the Pudding King's oozes getting behind our walls and the Goldwhisker's sneaking in and causing trouble, everyone seems to have forgotten about the menace that is Goruun'dar's Bane. The 'evil you know' I suppose... anyway, if you find yourselves heading out into the deeper reaches of Xanxirite, please consider releasing the crazed Earth Elementals, it is our duty as druids to make sure they remain in peace. Our duty to the Elemental Planes." 

"At least you don't have to deal with trolls anymore" *LANDMOP says in dry, deadpan, snark*

"Who are the Goldwhisker's?" Erix asks "And how will releasing crazed Earth elementals help? I understand we have our duties, but we also have our duties to our own plane to keep those that do no harm save."

Nomi explains that the Goldwhiskers are a Deep Gnome Wererat colony that controls the east part of Xanxirite, then looks at LANDMOP strangely when he mentions the trolls. “I don’t know exactly what you mean by that, unless… you’ve destroyed the trolls?! This is unbelievable! You have to go to Diggermattock Hall and tell the queen, this changes much.” She then turns to Erix, “Although not so much that a Druid can forsake their duty. Tell me, what quest could you be on that means you can ignore a quest from another Druid?”