I have a custom Aura, might be the one your talking about, but this has the aura turned off, as I only cared for the blood splat, healing fx, auto dead tokenmarker and SFX. I'd like to use aura for other stuff from time to time. that was going to be my second solution but since OP wants to share NPC health status report - defeats the purpose. I like the drama and tension of not knowing that meta info of npc health and just give them visual descriptors. Its looks pretty bad, pretty beat up, etc etc to give them an idea if they're listening.