Your quest for the rare Auras in Sol's RNG is endless, but you'll need the Watermelon Aura to complete your Lime and Jake missions before the Summer Event ends.
How to Get WATERMELON LIME for JAKE QUEST in SOLS RNG [Summer Events]
The Watermelon is a limited time Aura in Sol's RNG that can only be obtained during the Summer Event. One of the Lime and Jake quests requires you to use two Watermelon Aura along with Rainbow Syrup to craft a recipe to get your hands on the rare Surfer Aura and 10 Rainbow Ice. However, you'll need a lot of luck and a few tactics to get your Watermelon Aura faster than others.
Here's everything you need to know about the Watermelon Aura in Sol's RNG.
You can get the Watermelon Aura in Sol's RNG by rolling for different Auras. The chance of getting one is 1 in 320,000 for each roll, so it will be a long way before you have one Watermelon Aura in your inventory. None of the different biomes or weather conditions affect your chances, so all you can do is roll and wait for the final Watermelon.