I found this on a wiki site. It's for 3.2 so be sure to test it.

Code:
/castsequence reset=combat/target/6 Icy Touch, Plague Strike, Heart Strike, Heart Strike, Death Strike, Death Coil, Icy Touch, Plague Strike, Heart Strike, Heart Strike, Heart Strike, Heart Strike, Death Coil, Death Coil
/cast !Rune Strike