@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(target.charStats().getBodyPart(Race.BODY_FOOT)==0)
		{
			mob.tell(_("@x1 has no feet!",target.name(mob)));
			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-YOUPOSS> feet!^?"));
			final CMMsg msg2=CMClass.getMsg(mob,target,this,verbalCastMask(mob,target,auto)|CMMsg.TYP_DISEASE,null);
			if((mob.location().okMessage(mob,msg))&&(mob.location().okMessage(mob,msg2)))
			{
				mob.location().send(mob,msg);
				mob.location().send(mob,msg2);
				if((msg.value()<=0)&&(msg2.value()<=0))
				{
					invoker=mob;
					maliciousAffect(mob,target,asLevel,Ability.TICKS_ALMOST_FOREVER,-1);
					mob.location().show(target,null,CMMsg.MSG_OK_VISUAL,_("A fungus sprouts up between <S-YOUPOSS> toes!"));
				}
				else
					spreadImmunity(target);
			}
		}
		else
			return maliciousFizzle(mob,target,_("<S-NAME> chant(s) at <T-YOUPOSS> feet, but nothing happens."));


		// return whether it worked
		return success;
	}