"Easier said than done!" Nirzeg replied as he at least started to race after the Dragon. Even before he makes a full five feet closer however, a thought occurred that left him gritting his teeth. "Not gonna make it." He muttered, prior to turning to Harshnag and yelling, "Bigger Blue! Harhnag! By the nine, throw me at it!" The Gith called, clearly nervous underneath it all, but to determined to let fresh dragonblood get away!

Bonus Action, will command Sparky to come to me and will use Fiery Teleportation to teleport Rasa and anyone else willing within 5 feet of us 30ft in the direction of the dragon. Rasa will then fly his full 50ft towards the dragon so now within 120ft.

Harshnag nods and prepares to pick up Nirzeg...

// Lydia, Derrikoth, Swiper, what are you guys doing? //

Lydia will send a bolt down at the dragon 

7 DC15 for half.

Lighting strikes the dragon, who roars in frustration. 

// The dragon is trapped for one minute. Let me know what you are wanting to do and we’ll go from there! //

"That lad is mad!" Swiper comments when Nirzeg requests to be thrown at the dragon, beginning to sprint towards the dragon despite all his instinct telling him to run in the opposite direction. "What a death wish!"

(Swiper is gonna be using his movement, action, and bonus action to get closer to the dragon!)

Derrikoth teleports with Rasa, Josephus then dashes full movement towards the dragon.

"Pitiful... It really is."

The blood from the dead barbarians stains the frozen ground of the entrance hall, and the young white dragon struggles futilely against its magical bonds. Harshnag bounds towards the creature, intent on finishing it off. His greataxe and Lydia's light spell are the only two sources of illumination in the otherwise darkened temple entrance. 

At this point, the dragon is incapable of running and, as long as you play it smart, is completely at your mercy. 

// Please describe your efforts to finish off the young white dragon. At this point, its death is a forgone conclusion. I'll have you make an appropriate roll, if necessary. //

For Nirzeg's part in things, and though it likely meant gaining a number of burises, he remained keen on the idea of being thrown at the creature. So if/when given half the chance, he flies in with longsword in hand, carving what he hoped would be a large swathe out of the wing. Enough to render even in survival its crippling from now until a good many months at least, if even that. The rest he leaves for the others, though not without at least one shout of "Mind the scales! There's still good money in that!"

Whether it is futility or not, once the Dragon does finally still, the Githyanki all but gleefully rushes over to start collecting as many viles of its blood as he can in many a vials before it touches the ground. The heart and scales too, assuming he can enlist the aid of Rasa and Harshnag for the task.

Lydia repeatedly tosses down Lightning bolts until the dragon is dead.

Similar to Lydia, Swiper continuously shoots down the dragon with his crossbow. When the beast is successfully slain, he runs up to it and gives it a swift kick for good measure! Only to reel back in pain, cradling his talons, muttering a multitude of "ow's" in the process.

Seeing that the others have the dragon settled, Derrikoth sits back in Josephus's saddle, sighing at the sorry sight, "It is disappointing to see such a great creature laid so low. Though, the White were never the grandest among us."

At Nirzeg's request, Harshnag gently tosses him onto the dragon's back, and laughs while he holds the dragon's head in a lock. The dragon exhales a plume of ice at Harshnag, who simply laughs his bellowing laugh and is completely unaffected by the dragon's breath.

In summary, the young dragon is brutally carved up while being shocked to death. The bloodflow is slower than you might expect, owing perhaps to the dragon's physiology or the freezing atmosphere. The smell of the blood is strange as well; you can't quite place it, but it smells nothing like that of a humanoid.

Regardless, Nirzeg will be able to fill every vial he has with the creature's pale red blood. 

Harshnag cleans his glowing blade, and surveys the grisly scene. "One dragon down," he grunts. "Keeping this thing as a pet was a foolish decision on the part of the Uthgardt. Almost as foolish as their attack on us. 

"Speaking of whom, we shouldn't leave these bodies here." The frost giant gestures towards the frozen doors, still layered over with a sheet of ice. "Let's get ourselves inside the temple, and then I can bury these warriors as their customs dictate. Good plan?"

"Yes, yes, yes, by all means. Whatever the **** you want, big guy." Nirzeg says, not even looking in either Harshnag or the body's direction. Instead he stood there marveling at one of the many blood samples he had like a man that found a holy grail. But eventually, the Githyanki did come around, and after putting the capped vials away in his bag of holding, saw to assisting with the dead removal. Well, after also plucking a few teeth and scales as well from the dead dragon.

Tooth and Scale Harvesting: 23(Guidance included).

He, being of sound mind and body, wisely chose to bring around his horse for the carrying, as well as to get it further out of the cold; suggesting along the way for the others to do the same. Though if given half the chance he would inspect the leader's weapon for any signs of usefulness beyond basic convenience of bleeding an enemy.

The barbarian's iron axes are like the rest of their gear—crude and efficient. However, around the chieftain's neck is an amber amulet of some sort; the articulated decoration on the amulet is fine and delicate, and it looks out of place among the rest of the barbarians' belongings. 

Nirzeg tosses the axes into his bag, if only for some vague idea of tinkering trickery in the future. But as he gets to the necklace, it is this he cannot help but to linger on for a time. Without breaking eye contact on amulet in hand, assuming some magical trap didn't go off first, he calls up to Harshnag, "Think you can get the door open while we get these bodies sorted Big Guy?"

Harshnag shrugs. He walks up the stairs to the big, granite doors and gives them a test push. They don't budge.

The frost giant backs up a couple yards, and then with a HEAVE, rams the doors with his shoulder. The ice holding the doors shut splits with a thunderous CRACK, and the doors swing lazily open. 

He grunts satisfactorily, then beckons you follow, holding his greataxe aloft to shine its cold light on the temple interior. 

Thick frost clings to every surface of this 100-foot-high vaulted chamber, and is illuminated by an otherworldly glow. Seven enormous statues dominate the room. The largest of them is an 80-foot-tall robed giant, his arms outstretched and his face hidden beneath a stony cowl, facing a glowing archway in the east wall. Kneeling in rows to each side of this statue are six statues half its size, each impressive in its own right and depicting a paragon of a type of giant: hill, stone, frost, fire, cloud, and storm. These smaller statues face the bigger one in the room’s center. In their outstretched arms, five of the giants hold weapons—gifts for their All-Father. Only the frost giant statue is unarmed.

"Harshnag, could you tell us who the All-Father is, as well as why this one giant is unarmed while all the others bear weapons?"

Nirzeg lets out a long, low whistle. "Can't say much for the giant's seen in the past, but you big ****ers certainly knew your architecture back in the day." The Gith admits, sounding genuinely impressed for a change. While the others are exploring or asking questions, the wizard  turned away for a while to focus back on the horses bringing in bodies and asks, "That aside -- Not, thunder thighs thing, though I'm curious about that too -- but, what do you wanna do about this bodies by the way Big Blue?"

Quote from Sarcasticfury >>

"Harshnag, could you tell us who the All-Father is, as well as why this one giant is unarmed while all the others bear weapons?"

 Harshnag nods. “Annam is the all-father...the father of all giants,” he explains in his soft speaking voice. He gestures up at the faceless, cowled figure. “No giant has communed with him for millennia. The closest anyone gets is his oracle. That’s what this temple is here for, to house the Oracle. It is the unspoken bond of all giantkin to impress Annam and gain his favor. These other statues are the children of Annam. Grolantor, Memnor, Skoreaus Stonebones, Surtur, Stronmaus, and Thrym. Thrym is the progenitor of all frost giants,” he further explains, indicating the statue with no weapon. “He famously wields an axe, but I don’t know why it’s missing.” 

Harshnag glances around the immediate area to no avail.
There are doors, frozen shut like the entry doors were, to the north and south.

There are also closed portcullises on the west wall, on either side of the entrance. 

Additionally, there are unlit sconces that flank the glowing archway in the east wall.