there really isn't anywhere to put a macro request, so im putting it here. this macro could be use by any class, mainly would work good for warlock banish, and mage polymorph.
im looking for a macro that will...
if your focus isn't set, it will set your current target as your focus,
if your focus is set, it will target it, and cast a spell.
Does everything you requested, plus if you want to sheep something else before the first target dies, hold Alt while clicking the macro and it will
change the focus to your new target.