//Can go OnDamaged, OnDisturbed, OnSpellCastAt, creature heartbeats, etc.
void main()
{

object oPC = GetLastHostileActor();

if (!GetIsPC(oPC)) return;

object oTarget;
oTarget = OBJECT_SELF;

effect eEffect;
eEffect = EffectRegenerate(200, 3.0f);

eEffect = SupernaturalEffect(eEffect);

ApplyEffectToObject(DURATION_TYPE_TEMPORARY, eEffect, oTarget, 3000.0f);

}