Stardust armor

Stardust Armor is a Hardmode armor set that is crafted using Stardust Fragments and Luminite Bars. A full set summons a Stardust Guardian which follows the player around. The Guardian can be placed as a stationary minion by double tapping down and pointing to a location. It cannot be placed midair much like the Staff of the Frost Hydra. You may return the Guardian to yourself by holding down.

Crafting this set requires a total of 36 Luminite Bars (144 Luminite) and 45 Stardust Fragments.

Trivia

 * The Stardust Armor set effect bears a strong resemblance to Star Platinum, an iconic character from Stardust Crusaders, the third story arc of the manga JoJo's Bizarre Adventure.