Done a few searches and vaguely remember having something like this on my Priests back in TBC.

I want a macro that will have any living Shamans attempt to rez anyone who is dead but not rez the same target as someone who is already rezzing them. I want this to work in raids or just my 5 man. I want to push one button and have this start.

I am happy to use addon's to make this smart enough to know who is rezzing who.