Since Lassive failed to awnser the question at hand...
I'll link a good lv 70 affliction build
here.
Bascially since Imp SB has been nerfed so bad, it's not practical to take it (expect to get Ruin at lv 80).
You want to through up haunt and UA basically one after the other, and start your rotation with 1 SB (to get 2 stacks of SE)
So your rotation would go like this:
Cure(CoE here or CoA after Haunt) -> SB -> Haunt -> UA -> Corruption -> Siphon Life -> SBx3 -> Haunt -> UA ->, update as needed
Keep haunt up at all times as it will refresh corruption, and use your felpuppy.