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. To craft a Staff of Herding you’ll need 5 difficult to find items. It’s loaded full of rainbow colored ponies and what not. The staff is then used to unlock the secret cow level in Diablo 3, which is actually called Whimyshire. Liquid Rainbow is a secret item hidden within the game for the sole purpose of crafting a Staff of Herding. Note that Zaven also has a chance to spawn elsewhere in the 'Dahlgur Oasis' but the potential spawn point listed above is always in the same place and hence is easier to farm.The colors swirl and twist in hypnotic patterns. All party members will have their own account-bound version of the item. When you locate the chest, Liquid Rainbow will be found inside.If you do not find the chest, you must leave the game and 'Resume Game' to remake once again. However, when it does, it usually spawns in the 1st level of the cave but it can spawn on the 2nd level so it's a good idea to check both levels until you find it.

The Mysterious Chest does not always spawn, just like the merchant.

Look for the Mysterious Chest - This is not the Resplendent Chest found at the end of the dungeon, both may coexist.

Explore the rather large, multi-leveled cave.

Talk to Zaven, and he will open the door to the Mysterious Cave.

Spawn rate is estimated at 3-5% at each spawn point in Dahlgur Oasis. Look for Zaven the Alchemist, who must be saved from Deathly Haunts (he does not always spawn, in which case you must leave the game and 'Resume Game' to remake).Head southeast until you find a small path leading to a watery clearing (see image in the top left).Make sure the game is set to the seventh (7th - Blood and Sand) or later quest. In Act II, travel to the 'Path to the Oasis' waypoint ( Dahlgur Oasis if unlocked by player).This item can be very difficult to obtain, as the procedure is fairly random. Top Left: Location of Cave Entrance (From Path of Oasis waypoint, Act II) Top Middle: The merchant in trouble, you must save him Top Right: After saving the merchant, he will open the door Bottom left: The mysterious chest, looks similar to Resplendent Chest Bottom Middle: Map showing that the chest can be on first (or second) floor, and may even spawn near the entrance Bottom Right: Liquid rainbow item from inventory Diablo II: Resurrected Review - Pile Of Old Bones

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