The most distinctive feature of the cavern, however, was the mixture of odors that pervaded it. The smell of cold stone dominated, but underneath Eragon discerned whiffs of damp and mold and something far worse: the sickly sweet fetor of rotting meat.
Undoing the last few straps, Eragon swung his right leg over Saphira’s spine, so he was sitting sidesaddle, and prepared to jump off her back. Roran did the same on the opposite side.
Before he released his hold, Eragon heard, amid the many rustlings that teased his ear, a score of simultaneous clicks, as if someone had struck the rock with a collection of hammers. The sound repeated itself a half second later.
He looked in the direction of the noise, as did Saphira.
A huge, twisted shape hurtled out of the lancet passageway. Eyes black, bulging, rimless. A beak seven feet long. Batlike wings. The torso naked, hairless, rippling with muscle. Claws like iron spikes.
Saphira lurched as she tried to evade the Lethrblaka, but to no avail. The creature crashed into her right side with what felt to Eragon like the strength and fury of an avalanche.
What exactly happened next, he knew not, for the impact sent him tumbling through space without so much as a half-formed thought in his jumbled brain. His blind flight ended as abruptly as it began when something hard and flat rammed against the back of him, and he dropped to the floor, banging his head a second time.
That last collision drove the remaining air clean out of Eragon’s lungs. Stunned, he lay curled on his side, gasping and struggling to regain a semblance of control over his unresponsive limbs.
The concern in her voice fueled Eragon’s efforts as nothing else could. As life returned to his arms and legs, he reached out and grasped his staff from where it had fallen beside him. He planted the spike mounted on the staff’s lower end into a nearby crack and pulled himself up the hawthorn rod and onto his feet. He swayed. A swarm of crimson sparks danced before him.
The situation was so confusing, he hardly knew where to look first.
Saphira and the Lethrblaka rolled across the cave, kicking and clawing and snapping at each other with enough force to gouge the rock beneath them. The clamor of their fight must have been unimaginably loud, but to Eragon they grappled in silence; his ears did not work. Still, he felt the vibrations through the soles of his feet as the colossal beasts thrashed from side to side, threatening to crush anyone who came near them.
A torrent of blue fire erupted from between Saphira’s jaws and bathed the left side of the Lethrblaka’s head in a ravening inferno hot enough to melt steel. The flames curved around the Lethrblaka without harming it. Undeterred, the monster pecked at Saphira’s neck, forcing her to stop and defend herself.
Fast as an arrow loosed from a bow, the second Lethrblaka darted out of the lancet passageway, pounced upon Saphira’s flank, and, opening its narrow beak, uttered a horrible, withering shriek that made Eragon’s scalp prickle and a cold lump of dread form in his gut. He snarled in discomfort;
The smell now, with both Lethrblaka present, resembled the sort of overpowering stench one would get from tossing a half-dozen pounds of rancid meat into a barrel of sewage and allowing the mixture to ferment for a week in summer.
Eragon clamped his mouth shut as his gorge rose and turned his attention elsewhere to keep from retching.
A few paces away, Roran lay crumpled against the side of the cave, where he too had landed. Even as Eragon watched, his cousin lifted an arm and pushed himself onto all fours and then to his feet. His eyes were glazed, and he tottered as if drunk.
Behind Roran, the two Ra’zac emerged from a nearby tunnel. They wielded long, pale blades of an ancient design in their malformed hands. Unlike their parents, the Ra’zac were roughly the same size and shape as humans. An ebony exoskeleton encased them from top to bottom, although little of it showed, for even in Helgrind, the Ra’zac wore dark robes and cloaks.
They advanced with startling swiftness, their movements sharp and jerky like those of an insect.
And yet, Eragon still could not sense them or the Lethrblaka.
Raising his right hand above his head, Eragon cried,
“Hold them off for a minute,” he shouted, hoping Roran would hear. Whether he did or not, Roran grasped Eragon’s meaning, for he covered himself with his shield and lifted his hammer in preparation to fight.
The amount of force contained within each of the Lethrblaka’s terrible blows had already depleted the wards against physical danger that Eragon had placed around Saphira. Without them, the Lethrblaka had inflicted several rows of scratches — long but shallow — along her thighs and had managed to stab her three times with their beaks; those wounds were short but deep and caused her a great deal of pain.
In return, Saphira had laid open the ribs of one Lethrblaka and had bitten off the last three feet of the other’s tail. The Lethrblaka’s blood, to Eragon’s astonishment, was a metallic blue-green, not unlike the verdigris that forms on aged copper.
At the moment, the Lethrblaka had withdrawn from Saphira and were circling her, lunging now and then in order to keep her at bay while they waited for her to tire or until they could kill her with a stab from one of their beaks.
Saphira was better suited than the Lethrblaka to open combat by virtue of her scales — which were harder and tougher than the Lethrblaka’s gray hide — and her teeth — which were far more lethal in close quarters than the Lethrblaka’s beaks — but despite all that, she had difficulty fending off both creatures at once, especially since the ceiling prevented her from leaping and flying about and otherwise outmaneuvering her foes. Eragon feared that even if she prevailed, the Lethrblaka would maim her before she slew them.
Taking a quick breath, Eragon cast a single spell that contained every one of the twelve techniques of killing that Oromis had taught him. He was careful to phrase the incantation as a series of processes, so that if Galbatorix’s wards foiled him, he could sever the flow of magic. Otherwise, the spell might consume his strength until he died.
It was well he took the precaution. Upon release of the spell, Eragon quickly became aware that the magic was having no effect upon the Lethrblaka, and he abandoned the assault. He had not expected to succeed with the traditional death-words, but he had to try, on the slight chance Galbatorix might have been careless or ignorant when he had placed wards upon the Lethrblaka and their spawn.
Behind him, Roran shouted, “Yah!” An instant later, a sword thudded against his shield, followed by the tinkle of rippling mail and the bell-like peal of a second sword bouncing off Roran’s helm.
Eragon realized that his hearing must be improving.
The Ra’zac struck again and again, but each time their weapons glanced off Roran’s armor or missed his face and limbs by a hairsbreadth, no matter how fast they swung their blades. Roran was too slow to retaliate, but neither could the Ra’zac harm him. They hissed with frustration and spewed a continuous stream of invectives, which seemed all the more foul because of how the creatures’ hard, clacking jaws mangled the language.