Code:
/cast [noform] !Shadowform
/castsequence [combat] reset=0.3 0,0,0,Shadowfiend
/castsequence [combat] reset=0.3 0,0,Halo
/castsequence reset=0.3 0,Shadow Word: Death
/castsequence [nochanneling] reset=target Shadow Word: Pain,Vampiric Touch,Mind Flay,Mind Flay,Mind Flay,Mind Flay
/castsequence Mind Blast,Mind Blast,Mind Blast,Devouring Plague
/use [combat] 13
/use [combat] 14
/targetenemy [noharm][dead]
This topped me at 125k and maintained in pvp gear around 93k dps this works great thanks.