Talisman: Test Of Loyalty Book Three

Luke Skywalker and the old Jedi Obi-Wan Kenobi lead an attack on an Imperial prison base holding several Rebel supporters that could prove vital to the cause. Among them Luke meets a young woman who tells him of a desolate world where kyber crystals can be found to build lightsabers. Such an idea to further his training leads Luke and his friends to seek out the kyber crystals.