In the recent Era 8 update to Roblox's Sol's RNG, you can finally get your hands on the Oblivion Potion, which allows you to summon the rare Oblivion aura into your inventory.
WHAT! I GOT OBLIVION IN SOL'S RNG!
There are many auras in Sol's RNG in Roblox that you can obtain by rolling. But you can't obtain the rare Oblivion aura by traditional means, and it can only be obtained under one condition. You need to consume the Oblivion Potion, which is also very difficult to obtain.
The Oblivion Potion can be purchased in Sol's RNG by spending five Void Coins from the Jester Merchant NPC. Along with Traveling Merchant Mari, Jester is one of the new NPCs added to the game. Like Mari, Jester is even rarer and spawns at random locations on the map, making him a valuable spawn that sells great items to level up your Aura collection.
Void coins work a little differently than in-game money. You can earn them by completing a number of select achievements, which takes a lot of time, or by spending 500,000 in cash, which can blow a hole in your in-game economy.