I have been playing this game for two years and only now did I find out that the floating cube in Desolation's Edge on Nekrotafeyo is puzzle. The way you solve the puzzle is by shooting at each side with only of the five elements each side and one none elemental weapon.
The loot that drops out of the cube is nothing impressive, pretty common stuff..... at list it was for me. The puzzle can only be solved once per character/play through and after that the cube comes back but it's cracked open and does not rotate.
