The Galaxy Sword is a sword-type weapon that can be obtained by taking a Prismatic Shard to the Three Pillars in the Calico Desert. While holding the shard, enter the centermost tile between the three pillars. The Prismatic Shard will be consumed, and the player will now hold the Galaxy Sword.
After obtaining a Galaxy Sword, players will not be able to use a Prismatic Shard to obtain another. If lost or sold, another sword may be purchased from Marlon for 50,000g.
Obtaining a Galaxy Sword unlocks the Galaxy Hammer and Galaxy Dagger in the Adventurer's Guild shop.