Empty

Only three places can produce Empty: Null, The Limbo and Glitched, the combined condition in its 1 in 11,111,111 rarity. That means about 11.1 million rolls at 1x luck in one of those spots, or 1.1 million at 10x. The Sol's RNG Wiki puts it in Eon 1-23 as an Exalted aura, credited to Feabrey and Letaw_66l, and the data marks it obtainable.

When equipped, the player floats inside an imaginary ball and animates with a laggy, glitchy feel, like Player. The ball switches quickly between light blue and black, several layers spin at different speeds inside, a wind ring turns around the player, and icons such as a crown, a gear and an X appear now and then. The wiki lists a spiky collar as a unique accessory.

Empty is one of only four auras that change appearance between day and night, with Erebus, Emperor and Eostre. A small note: the in-game description is just a blank, extended with an ellipsis. The cutscene is a black screen with a bell chime, constant wind and an eight-pointed white star.