Glom unleashed another blast of cold. "Cold cold bind you freeze you," the goblin muttered. (7 base damage) The blast was weaker than the ones before, and creature seemed to shrug some of the damage off, but now its gelid flesh seemed to grow stiffer, as though it were indeed being frozen.
With a cry of anguish, the creature grasped the stone arch with four spider-like limbs and pulled itself into the room. The bulbous sack of its abdomen pulled free with an audible sound, somewhere between a pop and the squelching noise of a wet burlap sack, half-filled with mouldy grain, being trod upon unexpectedly. Kregor and Dain were forced back by the thing's strength. Properly bracing itself against the stone, it was too strong to prevent. (In other words, a much better roll on its Strength check!)
They could see the entire creature now: its reptilian head on its long neck, the spider-like bulbous body covered unevenly in hairy knobs and plates over transparent flesh, eight spindly legs ending in hooked claws, and a long segmented tail ending in a spiked knob of bone. The foxfire glow of the thing was fading, they noticed, and its organs -- visible through the walls of its abdomen -- pulsed less.
Horsom's audible gasp gave way to a scream of rage. Vengeance violently and suddenly thrust all else from his thoughts. He pulled two more arrows from his quiver and let fly. (You are within 30 feet, but get 13 and 18 totals.) The creature was easier to hit, now that the stone walls didn't protect a portion of its flank. One of Horsom's arrows sank deep (9 points damage).
Still determined, despite his failure to hit the beast with his last arrow shot, Selanil gritted his teeth and fired again. He hoped that with the abomination weakening, it would soon draw its final breath. He also prayed to whatever gods might be listening that none of his companions fell before the beast was defeated. (15 total, a miss) Again, though, his arrow was defeated by the bony knobs of the creature's skin.
Kregor was deeply wounded. He was encouraged by the weakening of the beast, but realized that he must do something, otherwise he could fail and let the monster by him. Studying his opponent, he waited for the most oportune time and then cast cure lite wounds upon himself.
(Kregor easily makes the Concentration check to cast defensively, with a 22, and burns bless to heal 6 points of damage)
Dain stepped back to switch weapons, replacing Tor-Angol with his sword. Although he had thought the five-foot step would be enough, he clearly misjudged the thing's reach, and it swung its long neck toward him, ready to attack using the opportunity so given. As the creature's attention turned, Kregor -- newly fortified -- stepped in and swung (15 total), his blade ringing ineffectually on the creature's scales. Fortunately, though, the creature's luck was no better, and its teeth scraped against Dain's armour rather than drawing blood.