@Override
	public boolean invoke(MOB mob, Vector commands, Physical givenTarget, boolean auto, int asLevel)
	{
		if(CMLib.flags().hasAControlledFollower(mob, this))
		{
			mob.tell(_("You can only control one golem."));
			return false;
		}

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

		if((!auto)
		&&(mob.location().domainType()!=Room.DOMAIN_INDOORS_CAVE))
		{
			mob.tell(_("You can not summon a rock golem here."));
			return false;
		}

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

		if(success)
		{
			invoker=mob;
			final CMMsg msg=CMClass.getMsg(mob,null,this,verbalCastCode(mob,null,auto),auto?"":_("^S<S-NAME> chant(s) and summon(s) help from the earth.^?"));
			if(mob.location().okMessage(mob,msg))
			{
				mob.location().send(mob,msg);
				final MOB target = determineMonster(mob, mob.phyStats().level()+(2*super.getXLEVELLevel(mob)));
				target.addNonUninvokableEffect((Ability)this.copyOf());
			}
		}
		else
			return beneficialWordsFizzle(mob,null,_("<S-NAME> chant(s), but nothing happens."));

		// return whether it worked
		return success;
	}