Can this be obtained from LFR? Can you also kill the same boss over and over in the same lockout to get it up?
Not 100% sure but I believe the answers are yes your three kills for the week can all be in LFR, but no they need to be 3 different bosses. You can only get 1 stack per week including across all difficulty levels.
Pretty sure that killing 3 bosses in lfr Uldir will grant one stack of RA per week.
As far as the same boss granting the stack in the same week... I'm not sure but I would think not. Haven't tested it really.
As far as the same boss granting the stack in the same week... I'm not sure but I would think not. Haven't tested it really.
I have this Archive of the Titans with Reorigination Array. Do I need to wear it to get a stack of Reorigination Array? I don’t want to use it until I have 10 stacks.