The colors swirl and twist in hypnotic patterns.
Liquid Rainbow is a secret item hidden within the game for the sole purpose of crafting a Staff of Herding. The staff is then used to unlock the secret cow level in Diablo 3, which is actually called Whimyshire. It’s loaded full of rainbow colored ponies and what not. To craft a Staff of Herding you’ll need 5 difficult to find items. Liquid Rainbow is one of them. Since none of them can be traded, bought or sold you will need to find one of each for yourself along with the recipe and then craft your own staff.
Where to Find Liquid Rainbow
The vile of Liquid Rainbow is found in Act II on any difficulty. To find it create or join a game on the Blood and Sand quest of Act II. Use the way point to go straight to the Path to the Oasis. Head east and south along the edge of the map until you find a nook, travel into this nook and look for a merchant who will request assistance from the nearby mobs. Here is what this nook looks like:
If the merchant is not there with a quest for you, leave the game and resume to start the process over. Remember, he doesn’t spawn all the time so you’re probably going to be doing this process over and over again. Here is what the merchant looks like:
He will unlock the door to the mysterious cave. Clear the inside of the cave looking for a mysterious chest. It will not always spawn and it will not always drop Liquid Rainbow. Of course, it only took me 2 tries but many people report that it took as many as 50 runs. Here is what the chest and the Liquid Rainbow look like:
Warning: These items are rather rare and difficult to find. Be sure to dedicate a large chunk of time to building your Staff of Herding and don’t be impatient when looking for individual items. It may work out that it takes you 10 hours or 10 minutes to find all the items you need. Good luck!