Conclave on Kessel The Conclave on Kessel was a meeting of Jedi survivors of Order 66 within an abandoned mine on Kessel . After the execution of Order 66 and the beginning of the Great Jedi Purge , a number of Jedi secretly established contact with each other . Jedi Master Shadday Potkin was one of them . Invitation . Shadday had become disillusioned with the Jedi methods of meditation , reflection , and careful planning , seeing these as forms of inaction that had led to the rise of the Galactic Empire . Wanting to take direct action , she planned to use the prospect of a gathering of Jedi to lure Emperor Palpatine ' s enforcer , Darth Vader , into a trap . Through her contacts she learned that Vader desperately sought the whereabouts of Obi - Wan Kenobi , although she did not know why . She called for a meeting of Jedi in an abandoned spice mine on the planet Kessel , and leaked this to the Empire , including misinformation that Kenobi would be present , in the hopes that this would entice Vader to come quickly , heedlessly , and alone . Seven other Jedi answered the call , including such prominent Masters as Tsui Choi . As they discussed their plans for the future of the Jedi , it quickly became apparent that they differed on what the proper course to take was . Some favored waiting , some favored direct action against the Sith , and one , Koffi Arana , proposed using the dark side to aid them . The deliberations were quickly cut short when Shadday ' s ninth invitee , Vader , arrived . The Battle . < noinclude > Vader smashed open the door and burst into the room , demanding to know the location of Obi - Wan Kenobi . Potkin revealed that Kenobi ' s presence was a lie to lure in Vader . Offering to let live the one who gave him Kenobi ' s location , Vader only provoked Sia - Lan Wezz , who lost patience and charged . Vader thrust his lightsaber into her chest and slashed her hand off as she fell . The rest of the Jedi present quickly attacked , with Tsui Choi and Bultar Swan hanging back , not wanting to fight Vader . While Vader engaged Ma ' kis ' shaalas and Roblio Darté , Koffi Arana came around and prepared to attack Vader from behind . Vader covered his flank with a quick Force Push that sent Arana flying while Shadday Potkin advanced . Vader used the distraction to slash open Ma ' kis ' shaalas ' chest . However , by killing Ma ' kis , Vader left himself an opening Jastus Farr quickly exploited , slashing Vader across the back with his double - bladed weapon . Vader , crying out in pain , leapt on top of one of the mining machines to evade an attack from a recovered Koffi Arana , and gain the high ground , having a brief midair exchange with Tsui Choi . He was followed by Shadday Potkin , who used her cortosis sword to disable his lightsaber . As Vader discarded his useless lightsaber , Shadday raised her blade and leapt forward for a killing stroke , only for Vader to seize her by the neck with one hand and clamp down on her wrist with the other . Vader promptly snapped her neck , killing her instantly . As Potkin ' s corpse plummeted to the floor of the mine , Vader took up her cortosis blade and attacked the remaining Jedi , disabling the blades of Jastus Farr , Koffi Arana , and Roblio Darté . As Vader prepared to finish them , Tsui Choi and Bultar Swan suddenly appeared , Choi amputating Vader ' s sword arm while Swan slashed him across the leg . Vader , disarmed and wounded , having taken three lightsaber hits , surrendered . Koffi Arana saw the trick for what it was and demanded that Swan kill him , as his lightsaber wasn ' t working yet . She refused , citing that Jedi never kill unarmed opponents . Arana took her lightsaber and killed her , before leaping at Vader , blade raised . Vader telekinetically summoned the cortosis blade , still clutched by his amputated arm , and hurled it at Arana , impaling him . Vader took up Swan ' s lightsaber and turned to face the remaining Jedi , reaffirming his earlier offer to let live the one who gave him Kenobi ' s location . However , instead of engaging , they used the Force to attack Vader , summoning the contents of the derelict mining carts and hurling them at Vader . The rubble smashed into Vader , injuring him severely and leaving him partially buried . Choi then demanded Vader ' s surrender , but Vader simply declared that he would destroy them . As Choi prepared to attack Vader , clone stormtrooper s , under the command of Commander Bow , arrived and showered the Jedi with blaster bolts . Jastus Farr , his lightsaber still disabled , was mercilessly shot to death . As Farr fell , Roblio Darté shielded himself with a piece of mining equipment while Choi deflected the bolts aimed at him . Choi leapt up to the catwalk the clone stormtroopers were firing from , hoping to distract them long enough for Roblio Darté to escape , only to get caught in mid - air by Vader ' s Force grip . While Darté was shot to death , Choi hurled his lightsaber at Vader before being killed himself , hoping to take the Sith Lord with him . The lightsaber slashed open Vader ' s helmet exposing his real eye , but failed to kill him . As Choi ' s corpse was unceremoniously dumped to the floor , Vader inquired about the clone stormtroopers presence , learning that the Emperor was requesting , and thus commanding , his presence . The Jedi were dead . Like the ancient Conclave at Katarr , the attempt to draw out and defeat the Sith had ended only in failure . Aftermath . Upon his return to Coruscant , Vader ' s injuries were tended to and the damage to his armor repaired . Vader subsequently appeared before his master . Palpatine stated that while Vader had disobeyed him , Vader ' s disobedience proved to be useful . By the time of the meeting between the two , Palpatine had already caused the circulation of rumors of what had occurred at Kessel , helping to cement Vader ' s image as a symbol of fear for the Empire , and a further warning to all who stood in his way . Palpatine further stated that Vader must overcome his fixation on Obi - Wan Kenobi , as that was a remnant of the Anakin Skywalker persona , of which Vader must purge himself .