This + Umbacrux + barrage = 0 cooldown traps. It gets to be so overkill that you need to invest in trap arming time reduction so your traps actually detonate.
Only sad part is that 99% of the enemies in the game die before the traps kill them and the 1% of enemies that the trap spam works against are likely to kill you if you stand still and spam said traps.
Mark my words. Blizzard is going to add an internal cooldown to this unique ability.