Finally. After more than 100 GR keys I managed to clear a GR89. It wasn't even a dream rift. Just decent map layout(s) & mob types. |--| Conduit pylon to kill ~3 elites & power pylon for boss was a must have to clear this rift. Even though the boss was terrible. I was about to quit this rift, but the conduit at the end was just sick. Never give up a decent rift guys. Build:.