Important: Wait for treasure casket+ Kupower to be active!
Just got it. Was in Temple of Uggalepih for about 20 hours total farming really fast (thief tools help sometimes).
Prepare to be there for a while. good luck!
Got real Lucky on this today- went there expecting to be there awhile but ended up teaming up with Oxo and he/she opended 1st chest and wala. No more then :30min