Very curious about this. I always see people wearing luck hats while farming Oktal Rax. However, in my experience, rerolls do nothing to help me get good drops. I have looted about 5 "Oktal" elites from Rax, and NONE of them were from rerolls. I've asked some other friends of mine and they have the same experience as me. Apparently, luck does not help.

Does luck reroll elites into legendary items, or is it just my confirmation bias speaking?