@Override
	public boolean invoke(MOB mob, Vector commands, Physical givenTarget, boolean auto, int asLevel)
	{
		final MOB target=this.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)|CMMsg.MASK_MALICIOUS,auto?"":_("^S<S-NAME> chant(s) at <T-NAMESELF> and bite(s) <T-HIM-HER>!^?"));
			if(mob.location().okMessage(mob,msg))
			{
				mob.location().send(mob,msg);
				if(msg.value()<=0)
				{
					invoker=mob;
					final Ability A=CMClass.getAbility("Poison_Venom");
					if(A!=null)
						A.invoke(mob,target,true,asLevel);
				}
			}
		}
		else
			return maliciousFizzle(mob,target,_("<S-NAME> chant(s) at <T-NAMESELF>, but nothing happens."));


		// return whether it worked
		return success;
	}