Eista - Borderlands 3 Farming Guides
Location: Skittermaw Basin on Xylourgos (Guns, Love and Tentacles DLC)
Part of: We Slass Side Quest
Drops: Cocky Bastard (Jakobs Sniper), Skullmasher (Jakobs Sniper) and Class Mods
Eista is a "boss" that you fight multiple times during the Guns, Love and Tentacles DLC for Borderlands 3. You're introduced to him while doing the story missions on Xylourgos and you'll be able to fight him again (three times) while doing the "We Slass" side quests. There are a total of 3 We Slass side quests and each of them are pretty much the same. Go grab some items, return to Eista, fight him and then go to the armory to collect your rewards.
In order to continuously farm Eista you'll have to complete all 3 We Slass side quests. Once you've done that you can fight Eista at any time by entering the arena where you fought him during every one of the We Slass quests.
As far as loot goes, Cocky Bastard (Jakobs Sniper), Skullmasher (Jakobs Sniper) and Class Mods are all of the items on Eista's dedicated loot list. Both the Cocky Bastard and Skullmasher are unique drops to Eista and are extremely difficult if not impossible to find on other enemies throughout the DLC. The Class Mods that drop from Eista are able to be found from other enemies throughout this DLC as well as from him.