void RespawnOrb(location lOrb)
{
CreateObject(OBJECT_TYPE_PLACEABLE, "plotancientorb", lOrb);
}

void main()
{
location lOrb = GetLocation(OBJECT_SELF);
AssignCommand(GetArea(OBJECT_SELF), DelayCommand(3600.0, RespawnOrb(lOrb)));

DestroyObject(OBJECT_SELF, 3.0);
}