They barreled through the door before Yerbol slammed it closed with a burst from his right palm. There was a deafening, furious cry that rattled his bones, jarred his mental faculties so much that he had to slump against the nearby wall, closing his eyes to try and recenter. Thankfully, nothing else occurred. No talons slicing through the door to grab and throw them to their dooms, no wicked laugh that emitted from an eyeless beast. Just silence. 

And it scared him. 

His eyes opened, now coherent enough to take in their surroundings. The room they were in now was almost a perfect square, the furnishings sparse except for an open air doorway that displayed sheets of rains coming down mercilessly on the once bleak and arid clearings they had complained about on their journey here. There was a path that extended outward in the distance, but the weather was providing little chance of spotting what was ahead of them. In the center of the room was a pedestal with a bust that looked familiar...
"Aria, isn't that the alien we saw earlier in the chamber? The one who wanted us to interrogate the prisoners?" He approached the bust and examined it closer. Even in stone, Yerbol could feel the mystifying gaze of the True Sith piercing him. 
"He might have been the one to design the whole system of trials." He mused, bending down to look at the inscription beneath:
"Before you is the last step. Conquer." Standing up fully, he commented:
"So we must have done the other two, right? We definitely ascended and conquering must have been-" The room shook as the earth under their feet quaked, the rain crystallizing mid-air as that signature soft, wicked cackle floated through the room. Accompanied by the cackle was a voice, harsh yet lilting in an almost melodious way:
"It has been too long since the Acolytes have tested my strength. Why flee?" Crunching some of the frozen rain, the beast stepped forward from the surreal picture, snout knocking more of the crystallized liquid away. It's jaws didn't move, but the voice continued:
"You don't smell of Sith blood. Odd. They do not normally send humans." Yerbol cast a wary glance at his companion before he stepped forward, responding:
"And what DO you know of the True Sith?"
"That I was created by them, that I was to ensure that none as weak as you would ever enter their fold."
"You assume we are weak?" The creature drew closer. 
"I assume nothing. I know all." Yerbol muttered to Aria:
"We're going to have to kill it. Any ideas besides plunging onto a stone path elevated hundreds of feet above ground to fight a crazed creature that can manipulate weather? Cause I got nothing."