(( Titus' WIS Save: 6 ))

Fuego Wisdom Save:  15

Death Save #1: 4

(someone better have healing magic)

(also, it's Fuego's turn)

"You see that you have no chance?" Crrethil says, laughing in a horrifyingly ugly way. But his laugh turns into a cough. The quiet sound of footsteps can be heard from the hallway, and Crrethil's smile is wiped off his face. "Shak Dysac." He murmurs. Crawling into the room is the Telestial Vindicator, barely clinging to life, dragging the flail behind him. "Take... the... flail..." He coughs out, dropping it onto the ground. "Kill... Crreth... Crrethil."

Quote from VitusW >>

Reaction: Silvery Barbs on Crrethil's hit
give advantage die to Thrudor
rolling d20 to see if surge happens: 18
no surge

[[ Did Crrethil score another hit even after the reroll? ]]

Oh, you're rerolling Crrethil's hit. When you said "give advantage die to Thrudor" I thought the spell was just helping Thrudor with a saving throw. 14 to hit.

(Does anyone see the reroll? I see "Dice rolls not yet available for this section." If you don't see it, let me try again: 9)

[[ Yeah. It does both the reroll and gives a die to someone. In general I'll go with Thrudor or Titus for the advantage die. Reason being it can either help Thrudor land a Guiding Bolt which can then give advantage to the next attack. Or to Titus so he has advantage when doing a Great Weapon attack. ]]

(Second roll I see a 9. So Thrudor never got hit.)

Fuego:

Directing the powerful wind against the ice devil, Fuego tries to blow him away from his friends once more (DC 15 Strength Save or be pushed 15 feet back).

He then shoots a bolt or crackling blade energy at the chinks in the ice devil’s armor!

Eldritch Blast:  Attack: 25 Damage: 12 Force Damage

DC 15 Strength save to resist being pushed 15 feet back: 12

"Take... the... flail..."      "Kill... Crreth... Crrethil."

Cunning drops his maul and makes a grab for the flail. Turning he swings with all his might, praying for a good hit.

Attack 13  Damage 5 +2 for rage.

Thrudor who felt the demon's attack come crashing down on him now feels nothing. Seeing he is in melee attack of the demon, he does the only thing he can which is try to bonk the demon with his staff. 

Attack: 21 Damage: 2

Titus winced at the psychic strike, but suppressed the pain. He watched as the Vindicator crawled in and dropped the flail, only to see Cunning grab it and attack.

With renewed vigor, the fighter stepped toward Crrethil and continued his assault, now determined to assist his companion in landing a (hopefully) decisive blow.

ACTION: Attack Crrethil, once again using a Trip Attack Maneuver on a hit (DC 13 STR Save or the target is knocked prone)
* Greatsword Slash - Attack: 20, Magical Slashing Damage: 17 (plus 15 extra dmg on crit

Finally, a hit! Pushing past his limits, the fighter lashed out yet again!

SURGE: Attack again. If Crrethil is not yet prone, use Trip Attack again; if he's already prone, use Disarming Attack on a hit (DC 13 STR save or he's forced to drop his spear)
* Greatsword Slash - Attack: 14, plus a second roll of 24 for advantage if Crrethil was knocked prone.
  Magical Slashing Damage: 14 (plus 18 extra damage on a crit)

End of turn! (Unless the surge attack is a crit, in which case he gets an extra bonus attack...)

[[ With the fail on Thuderwave and the second STR save against Fuego's Gust of Wind plus Phait having moved back before, would say he's starting ~50ft (25move + 10thunder +15gust) from Crrethil, barring mitigating factors of the room assuming my math is right. ]]

Seeing Titus and Cunning taking the melee, Phait moves back towards the ice devil. "Tembö muknak!" he says, driving a bolt of psychic energy into Crrethil.

Action: Mind Sliver
Damage: 6 pyschic
Save DC 15 INT
Fail: takes damage and next save has 1d4 subtracted from it
Success: No effect

Movement: 25ft towards the fight (so now ~25ft from Crrethil)

If Crrethil scores a hit with an attack, Phait will use Silvery Barbs to force a reroll and give the advantage die to Cunning. (Don't want him to have to be reckless with the flail, knowing how strong Crrethil is.)

Cunning, for your reference, the flail's to hit is +8 + your strength modifier + your wisdom modifier.

Here comes a ton of saving throws:

From Cunning: DC 25 Wisdom save resisting Death, advantage from being a devil: 25

From Titus: DC 13 Strength Trip save: 7. DC 13 Strength Trip/disarming save: 15

From Phait: DC 15 Intelligence 28

In summary of the last post, Crrethil tripped. He's now Prone on the ground.

(Also keep in mind that with the actual order of combat, which is Cunning and Thrudor at the same time, followed by Titus, then Phait, then Crrethil, then Fuego. Crrethil was knocked prone after Cunning and Thrudor attacked. He was prone for Titus's surge and Phait's action.)

Crrethil's Turn

Crrethil howls in rage and pain as he's knocked to the ground. He stands up (he is no longer Prone) and turns to Cunning. "Chakma qrivad krivaka. Chakma qrivad endira yogxarsaredi. Maxren forti qrizkakla, JAKRI HEXMADA CYRA!" He viciously bites Cunning's arm, pouring strange fluid and magic into him. He puts no thought into further attacks, simply pouring a strange liquid into Cunning, even though Crrethil seems to be harming himself in this action. 26 to hit, 7 piercing. If this attack hits, Cunning must succeed in a DC 17 Wisdom saving throw.

On a fail, Cunning takes 9 poison and 14 necrotic damage and the following effects take place. If Cunning fails the saving throw, he alone may click this box. Vedar may not click this box on a successful save.

Translation:

Phait will use a Silvery Barbs reaction to force a reroll, granting the advantage die to Cunning.

Edit: Wild Magic Surge
Tides of Chaos recharge
d100 result: 6

A modron chosen and controlled by the DM appears in an unoccupied space within 5 feet of you, then disappears 1 minute later.