Lil Help Needed

[Ikonoclastia]

Is there command like /targetlasttarget. Trying to set up a macro that targets the mobs target, casts a heal, then retargets the mob.

I have

/assist
/pause #
/cast 1
/assist

Which works fine but it does't work on myself which is a pain in the ass cause for some reason you can't assist yourself.

I googled it and then searched these forums but couldn't find anything on it.

Thanks