U can rush spirit overflow(if u know what u r doing), in general u just want to follow the build.(minor changes can be done, based on their spirit and gun resist). If ur runnin out of ammo in early game, buy active reload, u also can rush Rapid recharge and superior duration in case ur not burning anyone (focuse in spirit and buy transendent). Spirit burn its just not worth it anymore (buy in last case or if got buffed again)
Optional0 items