Samgong

Samgong is a joke aura that was never meant to be rolled, and the Sol's RNG Wiki labels it developer-exclusive and unobtainable. There is a small quirk worth knowing: when the aura appears, the chat message shows a rarity of 1 in 1,000,000,000, but that number is only a display. It cannot actually be rolled, so the odds cannot be turned into expected rolls at any luck level.

The look is deliberately silly. The wiki says the player sits on a toilet and the aura plays an occasional fart sound, and pressing X, the usual ability key, plays a flushing sound. It has no title and no rarity display of its own. The in-game description is a string of Korean sound effects, which the wiki says translate to the various noises heard during a bathroom visit.

No creator or version is listed in the entry, so it is best read as a developer gag. If you see Samgong on a leaderboard or in a screenshot, someone with developer access is the explanation, not a lucky roll.