Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
When this card is sent to the GY, if you have a "Laval" monster in your GY other than "Laval Volcano Handmaiden": You can send 1 "Laval" monster from your Deck to your GY.
--ラヴァル炎火山の侍女
--Laval Volcano Handmaiden
local s,id=GetID()
function s.initial_effect(c)
	--to grave
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOGRAVE)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCode(EVENT_TO_GRAVE)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
s.listed_series={SET_LAVAL}
function s.cfilter(c)
	return c:IsSetCard(SET_LAVAL) and c:GetCode()~=id
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_GRAVE,0,1,nil)
end
function s.filter(c)
	return c:IsSetCard(SET_LAVAL) and c:IsMonster() and c:IsAbleToGrave()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOGRAVE,nil,1,tp,LOCATION_DECK)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_DECK,0,1,1,nil)
	Duel.SendtoGrave(g,REASON_EFFECT)
end