Stella

Stella was supposed to be a merchandise reward. The plan, according to the wiki, was to hand the aura to people who bought group merchandise, but that idea broke Roblox's terms of service, so it was dropped and the aura became developer-exclusive instead. Today it is removed and cannot be rolled, so the entry carries no odds, no biome and no release version, and the page does not name a creator.

The design is a reference to an NPC also called Stella, a witch. The player rides a broom and wears a witch's hat, with a Stella plushie at the front. The only ability is cosmetic: using it makes the plushie grow and shrink a little and play a squeaky pet-toy sound. The wiki notes that it is one of few auras with an object to ride, along with Surfer and the StarRider line, and that its font is Tangerine. The page lists it as an Unobtainable tier aura. The wiki file is titled Stella (Aura) to separate it from the character page.