Let's say yellow

(Based on the rolls, the bite with disadvantage missed, but the constrict hit.  Original damage was 32 points and he is now constricted)

Randall:

Dodging as best he can, Randall narrowly misses getting mauled by the creature’s maw, but the tail is another story.  It cuts and bashes him, gripping him in a fearsome embrace!

Edited to add concentration check for Randall…

DC 16 Constitution Save to keep Bless:  21

Pepin walks forward to stand next to Randall. He first takes his all-purpose tool creating a tiny force ballista on Randal's shoulder. After which his bonus action is used to attack the creature.

Attack: 20 Damage: 11

And on a hit the target is pushed 5ft backwards.

Quote from Brian_Avery >>

Initiative Order:

Tempe
Zenodor
Randall
Crinder
Petcan
Pepin

 (Just to avoid having to scroll back each time. Tempe next, then Zenodor.)

Pepin's tiny ballista strikes the Crinder and illicits another screech from it as it is pushed back 5 feet and suffers another 4 damage.

A brief summary of the 1st round, there were some misses and some hits, the hits did regular damage so there are no apparent resistances. It has to deal with an area of Spike Growth but also has constricted partially around Randall which gave him the Grappled and Restrained conditions.

I have to double check but I believe if you are forcefully moved while grappling you lose the grapple? At least that is how I am ruling it for now so Randall is free of those conditions.

The Crinder has been pushed 5 feet back and away from Randall.

(ooc: thank you Zenodor for reposting the initiative so everyone doesn't have to scroll way back, it really helps for convenience.)

Randall:

Nodding his to Pepin as the creature is pushed off of him, Randall says, “Thanks—stay behind me.”  The wounded cleric grabs his prayer beads quickly, invoking healing, then he prepares to defend the group once more.  His Spiritual Weapon waits for instructions, but Randall’s focus is elsewhere.

Bonus Action Prayer Bead Cure Wounds:  16

Action to Dodge

(Constrict did 32 damage, eating through temp Hp and doing 22 hp regular damage, healed away somewhat by roll above.  AC 20 with Dodge.)

Tempe floats up to get a clear shot and throws some radiant damage at the Crinder Attack: 28 Damage: 14Attack: 20 Damage: 6Attack: 25 Damage: 10Attack: 24 Damage: 6

The last two using kia points

(To sort out that mess it was

 Attack: 20 Damage: 10

Attack: 13 Damage: 7

Attack: 22 Damage: 8

Attack: 28 Damage: 11 )

Zenodor steps back, careful to stay well behind Randall, and then casts Blight. 59 necrotic damage with DC16 CON for half 

Crinder's CON save: 21

The Crinder is bleeding (bloody) from the attacks it's suffered so far. It screeches again as it moves 5 feet back to melee with Randall taking 7 piercing damage.

It again attacks Randall.

Bite Attack: 17 Damage: 30

Constrict Attack: 20 Damage: 16 bludgeoning and 19 slashing damage.

(Petcan is up. Pepin is next.)

Randall:

Managing to narrowly dodge the creature's maw, Randall is again wrapped up by its massive tail.  Now bloody himself, Randall hopes to be able to last another round against this terrible foe...

Petcan launches another fire bolt at the glowing Crinder

Attack: 19 Damage: 18 

Pepin, still next to Randall, calls upon the storm gods and makes a lightning movement with his all purpose tool after which a thunderous boom can be heard from 300ft afar (in straight line). The Crinder must make a dc20 con save or be pushed back 10ft and receive 14 Thunder damage. While as a bonus action he instructs his ballista to fire once more as well.

Attack: 31 Damage: 6 and pushed back 5ft on a hit.

(casting 2nd level thunderwave in front of him so only the Crinder is hit; half damage on successful save btw)

Crinder's CON save: 21

The Crinder is pushed back 10 feet and suffers another 15 piercing damage as it screeches in agony.

The worm-like creature doesn't look good.

This is the start of Round 3.

(Tempe is up. Zenodor is next.)

(should be pushed back 15 ft; 10 from thunderwave and 5 from force balista)

Tempe summons Pinky just far enough away from anyone but the Crinder to be effected Dex save dc16 or take 10 Then Pinky flies down next to Randall but away from the party and does his fiery teleporting Randall 15ft away or just back to where Randal was before the grapple, Out of the Crinders grip Dex save 16 6 fire damage on the Crinder