Quote Originally Posted by 'Kyle K.',index.php?page=Thread&postID=75259#post75259
#showtooltip
/cast [target=Vánilla, mod:alt] Lesser Heal
/target [target=focus,help,nodead][target=party1,nodead]
/assist
/cast Smite
/cast [mod:alt, target=Vánilla] Lesser Heal; [mod:shift, target=focus, noharm] Lesser Heal; [help] Lesser Heal
/cast [mod:ctrl, target=focustarget, noharm] Lesser Heal; [target=focustarget, harm] Smite

I think that should do it nicely, on alt press heals Vanilla, on mod shift heals focus's, on no mod and no target heals self.
On focustarget mod ctrl heals focus's target if no harm, if harmable smites.