void main()
{
 object oPC = GetEnteringObject();
 object oToken = GetItemPossessedBy(oPC, "underworld");
 if(GetIsDM(oPC)||GetIsDMPossessed(oPC) || !GetIsPC(oPC))
 { return; }

 if(oToken == OBJECT_INVALID)
 {
  CreateItemOnObject("underworld", oPC, 1);
 }

}