Kyros could barely decipher the great lizard's head from its tail, but his allies attacks gave him an opening to swing into the beast regardless.

Attack: 11 Damage: 13 

The braap of the dissonant whispers blasts through the mind of the lizard and it cannot stop the pain. Shaking its head it prepares to enter the fray.

As Kyros steps in to swing with his sword it clangs of its hide and the beast snarls at him, baring yellowed teeth and drool. It seems to  be grinning at you in a macabre way...

Archibald looked back and forth between his shortbow and the lizard. He had his doubts that his arrows would be able to pierce the beast's hide  but he was going to give it his best shot. He readied the bow and winced as he fired. 

(OOC: assuming the lizard is within 5ft of a party member or guard for sneak attack if not ignore that damage.) 

Attack: 17

Damage: 7

Sneak: 4 

The great beast bellows at Archibald's arrow now protruding from its front leg. It snarls and snaps it off at the base.

The kobold that Azrial turned to now holds its chest as an ominous bell clangs that only it can hear... death comes for it... It stumbles and its previous fear heightens now.

Below is the current standing of everyone. I know we're not fully through the round, but I think a visualization of this scenario is very necessary. The small area to the left with the cluster of things is the 'ready room' and that far left wall has the busted-in gate. It's approximately 15' by 20'. That view is partially cross-sectional; there is a roof to that room.

"I suppose it only makes sense that I would be guiding creatures through to their death even outside of the church..." Azrial mumbles to Plop as he casts Toll the Dead on the Kobold a second time.

Damage: 8

As he is casting the Cantrip he sees a rather large Lizard in the next room; he quickly runs over to the guard in the South East of the room, as to gain a bit of cover. "Sweet Jormungand!" Exclaimed Azrial; "Plop, this isn't what I had in mind! Lizards?! I just wanted to pet a cat..." Azrial looks up to the bewildered guard standing next to him and gives a huge grin. "Hi I'm Azrial, and this," He motioned to the doll head on his blet, "is Plop!"

As Azrial turns and mournfully recasts his Toll cantrip, the kobold that made his way into the yard looks up to the sky, says something in Draconic as his heart bursts, and falls to the ground, tears in his eyes...

Rushing southeast in the yard Azrial does his best to remain in view, but out of harm. Several guards make their way down to that area as well; the one beside Azrial grins warily and raises an eyebrow at Plop. "Hi," He says shortly.

Coming to bear fully now, the reptilian beast rears back and attacks at Kyros in unison with the kobold beside it! Seeing the wildly telegraphed bite, Kyros sidesteps quickly, only to be caught in the side by the beast's mighty tail for 6 damage! The kobold swings as well, but Kyros' sidestep saved him from the tiny dagger too.

The two kobolds on the walls attack the guards, slashing away with small daggers wildly. One of them clangs against the guard's shield (to Kyros' right) and the kobold fighting in the southeast corner gains ground by dealing 4 damage to that guard!

The cultist in the back raises his right hand, palm out, and a staff in the left, mumbling to himself... staring intently at Kyros. Weaving his hands in seemingly erratic, wavy shapes Kyros notices phantasmal flames begin to form around him... He attempts to move out of the spell. (Please make a DEX save)

Seeing his own sword glance of the beast's scaled hide, Kyros had only moments to realize he might have, once again, stepped into something more than he could handle. Luckily, two Kobolds were otherwise preoccupied with the local Guard. Still, a Kobold, a monster, and a cultist wielding magic might overwhelm him, especially as his previous wounds suddenly flared with pain.

The great beast roared as an arrow sprouted from its side, and flailed its gaping jaws toward the Fighter. Kyros dodged once, and the jaws snapped shut on nothing. He stepped again to evade the flash of the Kobold's dagger, which also pierced empty air. As Kyros planted his feet once more, the beasts tail thrashed into his side, and his armor groaned under the blow.

Even as he recoiled, Kyros saw the magical flame coalescing in his periphery. In a split-second decision, he shifted his weight. Rolling with the momentum, the Dragonborn attempted to escape the arcane hellfire growing to engulf him.

Dex save : 6

As the flames began to lick at his armor Kyros managed to avoid the pillar of flame that sprouted where he once was. The heat was threatening to overwhelm the small room, but it dissipated as quickly as it started. After the bright flash and wave of heat there was nothing but a circle of charred dirt on the ground and an identical char mark directly above it on the ceiling.

Looking about at the chaos, feeling revitalized by Azrial’s boost, Talien moves himself between the Governor and mass of approaching enemies saying, “Get back to the keep! We cannot risk having you out here.” With this, Talien takes aim again at the large lizard thrashing wildly. Getting a better look, he racks his brain to try and decipher the nature of the creature (Nature Check: 17). As he inspects it, he looses another arrow toward the lumbering beast. Regardless of what it is, it must not be allowed to destroy this keep, these people have had a long enough night as it is. Remembering the faces of his people on the night of the attack, Talien grips his bow tighter, drawing the string to its maximum length. I will not let them suffer the same fate. 

Attack: 24 (OOC: I am using my inspiration to get advantage on this roll as it fits the tone of Talien's mind at the time).

Damage: 10

The lizard (as far as you know) snaps its jaws in pain as another arrow finds purchase. It growls again, looking quite ready to continue the fight, and looks around for the source of the pain.

 Lias strode forward behind Talien and locked eyes with the cultist. "Fire? HAH. We ran towards the flames- what makes you think FIRE will stop us?"

Vicious Mockery : 3

The Acolyte, noticing the half-orc cursing at him. Turns to face her "Because these are the flames of Tiamat herself, sheep! They will burn bright, especially against those who resist!" Saying so he flourishes his hand and seems unaffected by your words.

Kyros regained his feet a moment later, as Lias began to banter with the enemy mage. With comrades nearby, his confidence piqued, and for a moment, he envisioned a great stage before him. There he was, in the role he destined for, like the heroes of old. 

The brave knight, a scalesbreadth from defeat, dancing a dramatic and deadly duel with death itself. Thrice yet he had parried and evaded his grim foes attacks, and now he was granted an opportunity to push his pursuer back once more. 

The vision cleared and Kyros saw only the wounded and angry beast before him. He raised his greatsword and swung. 

Attack: 10 Damage: 13 

The lizard, now learning, moved quickly and dodged Kyros' swing once again!

Archibald's focus on the giant lizard was interrupted abruptly as the kobold collapsed dead behind him. Resurveying the situation, he decided against another attempt to pierce its hide with his arrows; instead, he turned his focus to the cultist, and fired his bow.

Attack: 15

Damage: 7 plus 5 sneak.

Despite the cover, Archibald's shot finds its mark! The arrow seemingly snakes its way past other foes and into the chest of the fuming cultist. In the middle of his tirade about Tiamat and burning the nonbelievers to ashes his life is snuffed out. He gasps and his spell weaving ceases, shortly followed by his breathing, and he collapses onto the floor of the ready room, dead.

 Noticing that his new Dragonborn compatriot was in a bit of a pickle Azrial moves closer to the fight. "Oh me, oh my! Let's help; shall we?" He said to no one in particular as he casts Sacred Flame: 1

(OOC: I would like to move within 60 ft of the Lizard so that I can see it) 

The lizard, maybe not the most intelligent creature, does recognize that the flames beginning to surround it are the same as those its ally used previously and dodges slightly. In doing so it knocks its hide against Kyros' blade and still manages to take 1 damage.

The great beast then lunges for Kyros and snaps its jaws around him! It connects easily and Kyros takes 7 points of piercing damage!

The kobolds then begin teaming up on the guards, 2 to 1 in the corners. The first guard falls as both kobolds find places in the armor to shove their daggers. The second guard blocks one of the kobold's daggers, but in doing so leaves himself open for the other attack. He is hurt, but ready to attack back.

The Governor is now gone, rushing into the keep to find Escobert.

“Kyros!” Talien shouts as he sees his companion fall to the jaws of the beast. We must draw that monster out. There’s no sense in fighting it in such close quarters, besides, we need to get it away from Kyros…

“Guards! Draw back to the yard! Pull them into the open!” With this, Talien takes aim at one of the kobolds and fires.

Attack: 22 Damage: 10

(Edit: RETCON - didn't know you were aiming for a kobold)

The lizard snarls as an arrow suddenly thuds into its front shoulder; it doesn't appear to feel the pain, but lashes around with its tail to its left. Gnashing its teeth it looks for its next target and hears a muffled scream as it crushes the kobold north of it into the wall. Its small, crumpled body slides, lifeless, to the ground.

The guards that you can see turn their eyes your way briefly, not wanting to look away from their enemies. Make a persuasion roll, Talien.