$npc->Damage($entity_id)?

[Asylum]

It is now clear from testing

$npc->Damage($h_ent, $h_dmg, 13, 1, true, -1, false);

always does the damage $h_dmg to the npc running the script, giving the message that $npc has taken $h_dmg from your spell Complete Heal. I put the 13 just to test it.

So, this does not solve my problem of having the mob cause $h_dmg to each entity on its hatelist. This function cannot create that effect and my search continues...