@Override
	public void unInvoke()
	{
		// undo the affects of this spell
		if(affected==null)
			return;
		if(!(affected instanceof Room))
			return;
		if((shooter==null)||(parameters==null))
			return;
		if(canBeUninvoked())
		{
			shooter = (Ability)shooter.copyOf();
			final MOB newCaster=CMClass.getMOB("StdMOB");
			newCaster.setName(_("the thin air"));
			newCaster.setDescription(" ");
			newCaster.setDisplayText(" ");
			newCaster.basePhyStats().setLevel(invoker.phyStats().level()+(2*getXLEVELLevel(invoker)));
			newCaster.recoverPhyStats();
			newCaster.recoverCharStats();
			newCaster.setLocation((Room)affected);
			newCaster.addAbility(shooter);
			try
			{
				shooter.setProficiency(100);
				shooter.invoke(newCaster,parameters,null,false,invoker.phyStats().level()+(2*getXLEVELLevel(invoker)));
			}
			catch(final Exception e){Log.errOut("DELAY/"+CMParms.combine(parameters,0),e);}
			newCaster.delAbility(shooter);
			newCaster.setLocation(null);
			newCaster.destroy();
		}
		super.unInvoke();
		if(canBeUninvoked())
		{
			shooter=null;
			parameters=null;
		}
	}