i farm medira/medoroa?/magira? (sorry forgot the manticore boss name) 8 times in a row at lvl 53-54 in elite diff got 0 manticore eye
i farm killirian boss in the same lvl in elite diff 4 times and got 2 kill shatered souls
please increase the drop rate from boss, eventough hero n white n yellow mobs can drop too but it like 1:100 drop rate for manti eyes