@Override
	public boolean invoke(MOB mob, List<String> commands, Physical givenTarget, boolean auto, int asLevel)
	{
		final MOB target=this.getTarget(mob,commands,givenTarget);
		if(target==null)
			return false;
		Room R=CMLib.map().roomLocation(target);
		if(R==null)
			R=mob.location();

		if(!super.invoke(mob,commands,givenTarget,auto,asLevel))
			return false;

		boolean success=proficiencyCheck(mob,0,auto);

		if(success)
		{
			invoker=mob;
			final CMMsg msg=CMClass.getMsg(mob,target,this,verbalCastCode(mob,target,auto),auto?"":L("^S<S-NAME> scream(s) at <T-NAMESELF>.^?"));
			if(R.okMessage(mob,msg))
			{
				R.send(mob,msg);
				if(msg.value()<=0)
				{
					success=maliciousAffect(mob,target,asLevel,0,-1)!=null;
					R.show(target,null,CMMsg.MSG_OK_VISUAL,L("<S-NAME> go(es) deaf!"));
				}
			}
		}
		else
			return maliciousFizzle(mob,target,L("<S-NAME> scream(s) at <T-NAMESELF>, but the spell fizzles."));

		// return whether it worked
		return success;
	}