@Override
	public boolean invoke(MOB mob, Vector commands, Physical givenTarget, boolean auto, int asLevel)
	{
		final MOB target=getTarget(mob,commands,givenTarget);
		if(target==null) return false;

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

		final boolean success=proficiencyCheck(mob,0,auto);
		if(success)
		{
			// it worked, so build a copy of this ability,
			// and add it to the affects list of the
			// affected MOB.  Then tell everyone else
			// what happened.
			final CMMsg msg=CMClass.getMsg(mob,target,this,verbalCastCode(mob,target,auto),auto?"":_("^S<S-NAME> chant(s) over <T-YOUPOSS> stomach.^?"));
			if(mob.location().okMessage(mob,msg))
			{
				mob.location().send(mob,msg);
				final Ability A=target.fetchEffect("Pregnancy");
				if((A==null)||(A.displayText().length()==0))
					mob.tell(_("@x1 is not pregnant.",target.name(mob)));
				else
				{
					String s=A.displayText();
					if(s.startsWith("(")) s=s.substring(1);
					if(s.endsWith(")")) s=s.substring(0,s.length()-1);
					mob.tell(_("@x1 is @x2.",target.name(mob),s));
				}
			}
		}
		else
			return beneficialWordsFizzle(mob,target,_("<S-NAME> chant(s) over <T-YOUPOSS> stomach, but the magic fades."));

		// return whether it worked
		return success;
	}