@Override
	public boolean invoke(MOB mob, List<String> commands, Physical givenTarget, boolean auto, int asLevel)
	{
		final Room target=mob.location();
		if(target==null)
			return false;
		if(target.fetchEffect(ID())!=null)
		{
			mob.tell(L("The waters here are already bloody."));
			return false;
		}
		
		if(!CMLib.flags().isUnderWateryRoom(mob.location()))
		{
			mob.tell(L("You must be underwater for this chant to work."));
			return false;
		}
		if(!super.invoke(mob,commands,givenTarget,auto,asLevel))
			return false;
		final 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> chant(s) to the waters.^?"));
			if(mob.location().okMessage(mob,msg))
			{
				mob.location().send(mob,msg);
				if(msg.value()<=0)
				{
					mob.location().showHappens(CMMsg.MSG_OK_VISUAL,L("The water becomes red with streaks of blood!"));
					beneficialAffect(mob,target,asLevel,0);
				}
			}
		}
		else
			return maliciousFizzle(mob,target,L("<S-NAME> chant(s) to the water, but the magic fades."));
		// return whether it worked
		return success;
	}