Abomination

There is no drop chance to calculate for Abomination, because it was never meant to be rolled. The Sol's RNG Wiki classes it as a Developer Exclusive aura made by 53_Axis, unobtainable by normal players, with no release date listed and no price or craft. If you see it in someone's collection, it came from the developers, not from luck.

What makes it worth a page is the lore. The wiki says the community lore describes seven gods, representing the developers, who created the universe and Sol; Sol then made the auras and kept the peace, until some auras wanted chaos and that desire produced Abomination, which has been at odds with Sol since. Its look supports that: dark pink and black, a huge glowing star orb above a player who floats pointing downward, three smaller orbs joined by dark pink lightning, and a purple void underneath. The wiki reads it as a blend of Impeached, Exotic : Apex and Sol, and its title keeps changing capitalization and symbols, in the manner of Glitch.