void main()
{
object oPC = GetEnteringObject();

    if(!GetIsPC(oPC))
    {
    return;
    }

    if(GetTag(GetItemInSlot(INVENTORY_SLOT_CLOAK, oPC)) == "MedusasShawl")
    {
    return;
    }

    object oTarget = oPC;
    ApplyEffectToObject(DURATION_TYPE_INSTANT, EffectVisualEffect(VFX_FNF_GAS_EXPLOSION_EVIL), oTarget);
    SendMessageToPC(oTarget, "Strangely you just stop running... Soon you realize, you've been petrified! (This lasts only 1 min so don't panic :P , find/wear cloak to avoid this.)");
    ApplyEffectToObject(DURATION_TYPE_TEMPORARY, EffectPetrify(), oTarget, 60.0f);
}