I would use executioner instead of double bombs because the second singularity spike does a lot less damage than the first and executioner does more damage to slowed enemies so it makes the first singularity spike more useful

it is a good guide but I play it slightly different executioner is my choice because it can put extra damage on things slowed by singularity spike which is the first ability used on the target a burst damage attack damage is usually better than attack speed berserk is also active ability so it has recharge and the executioner works whenever a thing is spiked I go for pure damage in the lower tiers which is the other difference in level 20 talent fury of the storm is the second...