Battle of Jebble A battle of the Mandalorian Wars took place on the ice planet of Jebble where every Mandalorian recruit from the Outer Rim assembled to invade Alderaan . However , before transports for the invasion arrived , the Muur Talisman introduced the Rakghoul plague , which ravaged the waiting troops and set them against each other when the bitten soldiers mutated into rakghoul s . Upon arrival , Cassus Fett ' s ships bombarded Jebble , destroying all rakghouls and troops on the surface of the planet , putting an end to the conflict . Prelude . The Mandalorian survey ship " Mar ' eyce " returned from Taris after former assistant to the recently incarcerated Demagol , Pulsipher , and his Mandalorian team found the ancient Sith artifact known as the Muur Talisman . Unbeknownst to him , he had three stowaways onboard , Jedi Padawan fugitive Zayne Carrick , Marn " Gryph " Hierogryph , and Covenant Shadow Celeste Morne , currently engaged in her mission to retrieve the Talisman . Celeste tried to trick Pulsipher into throwing the Talisman out the airlock , but under the Talisman ' s influence he resisted . Immediately , it began wrapping around his right arm and attacked the nearest Mandalorians , leaving one dead and others with red marks on their armor . The " Mar ' eyce " soon landed , just as Mandalorians were conscripting new recruits for an invasion of Alderaan — as soon as Cassus Fett brought the transports . Unfortunately , the Mandalorians who were now marked turned into a rakghoul s and quickly began biting others , transforming them into rakghoul s , and faster than usual witnessed . Worse , the Muur Talisman enabled the rakghouls to use their previous skills as beings and therefore they were smarter and could use weapons and equipment such as basilisk war droid s . Battle . As a result , it was Mandalorian fighting against Mandalorian turned rakghoul and Zayne Carrick contacted Cassus Fett in route with the transports , warning him about the plague . Cassus had good reasons to not trust Zayne , as he was part of the group who tried to kill him , but Zayne insisted that despite their positions on opposing sides he still regarded the Mandalorians as people and told him to survey first and not land . Pulsipher , at the time using the Talisman in his possession to control the rakghouls , captured Zayne and demanded he reveal more of its secrets . But the Talisman wanted a Jedi , so it abandoned Pulsipher to the rakghouls and lashed at the Padawan . Zayne considered claiming the Talisman in order to control the rakghouls and save the galaxy , but Celeste took the fall and became the Talisman ' s new wearer and host of the spirit of Karness Muur . Blinded by the dark side , Celeste began to lead the rakghouls in battle against all of the Mandalorians . Zayne soon convinced her that she was doing the Sith ' s work , the opposite of her sworn mission to prevent the return of the Sith as a member of the Jedi Covenant . To isolate the power of the Muur Talisman , Celeste allowed Zayne to enclose her in the oubliette of the Sith Remulus Dreypa until he could find Jedi who could help her , sealing the Talisman ' s influence . With the Talisman withdrawn the rakghouls became mindless , abandoning their weapons and attacking everything in sight , including themselves . Zayne and Gryph soon found themselves under attack and barely escaped on the " Moomo Williwaw " , but Zayne hoped to return to retrieve Celeste until Cassus Fett ' s ships arrived . Instead of landing the ships on the planet , Fett ordered a nuclear bombardment of the planet ' s surface , destroying all structures , the rakghouls , and any remaining troops . Aftermath . Upon witnessing the destruction Zayne believed that Celeste had perished , but she survived and remained in stasis inside the oubliette . Centuries later a historian noted the battle ' s placement in the Mandalorian Wars and Gryph recorded his memoirs of the event in his hologram . Ice miners on Jebble discovered the undamaged oubliette about two thousand five hundred years later . Behind the scenes . The Battle of Jebble appeared in the " Knights of the Old Republic " arc of " " series of comics , with John Jackson Miller as writer and Scott Hepburn providing the art .