I like this spec when doing onslaughts, esp in HK IAS
40 Tact/28MM/8RS
http://rift.magelo.com/en/soultree#T9Ba8Gi55I/Akx5Agw/t8g
Important to note: Aim counts
I use Power Core & Battle Core the most. Necrotic Core when the critters are about 20%.
Buffs: Curative engine, Planebound resiliance, Electrified Munitions, Rending Munitions.
I start with my empyrean bolt builder then infernal torrent galatial torrent and finish with infernal beam and torrent primer. You only get combo points for the builder which is used for torrent primar empyrean ray and curative blast. I also use a healing remote to help my health and others in the party.
Builder macro:
stop casting is important as the torrents can drag on.
#show empyrean bolt
suppressmacrofailures
cast empyrean bolt
stopcasting
Healing macro:
#show Curative
suppressmacrofailures
cast Curative Core
cast Curative Remote
Enjoy