I am really sory if there is a thread somewhere out there about this , just could not find it. So what and where I should farm for this set to drop since the only thing I know about it, is that it drops from specific “purple” bosses.
Valaxterria, Terrnox and Fleshwarped Krieg. They have same drop chance in Elite as in Ultimate if they are like level 94 or higher.
At the bottom of each individual item there’s the name of the boss who drops it.
https://www.grimtools.com/db/search?query=krieg&in_description=0&exact_match=0