#show
/Cast !Rune Strike
/castsequence reset=combat Icy Touch, Plague Strike, Pestilence, Blood Strike, Death Strike, Death Strike, Blood Strike, Pestilence, Death Strike, Death Strike, Blood Strike, Blood Strike, Death strike
/castrandom Death Strike

is what I use, open with dnd, if diseases fall off for some reason (extended stuck in combat on multiple enemies) refresh manually. I'm lazy so I use it on bosses too but clearly there are wasted runes, it's designed for heroic trash. My dk ends up with more far more healing than my shamans (totems excluded) and I can just zerg dps except for hard hitting packs.

Far from optimal but works pretty swell for me.