Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Discard 1 Winged Beast monster; add 2 "Simorgh" monsters with different Attributes from your Deck to your hand. You can banish this card from your GY; reveal 1 Winged Beast monster in your hand, and if you do, reduce the Levels of monsters in your hand with that name by 1 for the rest of this turn (even after they are Summoned). You can only activate 1 "Simorgh Onslaught" per turn.
--神鳥の来寇
--Simorgh Onslaught
--scripted by Hatter
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_SEARCH+CATEGORY_TOHAND)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	--level down
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCost(Cost.SelfBanish)
	e2:SetTarget(s.rvtg)
	e2:SetOperation(s.rvop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_SIMORGH}
function s.cfilter(c)
	return c:IsDiscardable() and c:IsRace(RACE_WINGEDBEAST)
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_HAND,0,1,e:GetHandler()) end
	Duel.DiscardHand(tp,s.cfilter,1,1,REASON_COST|REASON_DISCARD)
end
function s.thfilter(c)
	return c:IsSetCard(SET_SIMORGH) and c:IsMonster() and c:IsAbleToHand()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then
		local g=Duel.GetMatchingGroup(s.thfilter,tp,LOCATION_DECK,0,nil)
		return g:GetClassCount(Card.GetAttribute)>=2
	end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,2,tp,LOCATION_DECK)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(s.thfilter,tp,LOCATION_DECK,0,nil)
	if g:GetClassCount(Card.GetAttribute)>=2 then
		local sg=aux.SelectUnselectGroup(g,e,tp,2,2,aux.dpcheck(Card.GetAttribute),1,tp,HINTMSG_ATOHAND)
		Duel.SendtoHand(sg,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,sg)
	end
end
function s.rvfilter(c)
	return c:IsRace(RACE_WINGEDBEAST) and c:IsLevelAbove(2) and not c:IsPublic()
end
function s.hfilter(c,code)
	return c:IsCode(code) and c:IsLevelAbove(2)
end
function s.rvtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.rvfilter,tp,LOCATION_HAND,0,1,nil) end
end
function s.rvop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_CONFIRM)
	local g=Duel.SelectMatchingCard(tp,s.rvfilter,tp,LOCATION_HAND,0,1,1,nil)
	Duel.ConfirmCards(1-tp,g)
	Duel.ShuffleHand(tp)
	local hg=Duel.GetFieldGroup(tp,LOCATION_HAND,0):Filter(s.hfilter,nil,g:GetFirst():GetCode())
	local tc=hg:GetFirst()
	for tc in aux.Next(hg) do
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_LEVEL)
		e1:SetValue(-1)
		e1:SetReset(RESET_EVENT|(RESETS_STANDARD_PHASE_END&~RESET_TOFIELD))
		tc:RegisterEffect(e1)
	end
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e2:SetCode(EVENT_TO_HAND)
	e2:SetReset(RESET_PHASE|PHASE_END)
	e2:SetLabel(g:GetFirst():GetCode())
	e2:SetOperation(s.hlvop)
	Duel.RegisterEffect(e2,tp)
end
function s.hlvfilter(c,tp,code)
	return c:IsLevelAbove(1) and c:IsControler(tp) and c:IsCode(code)
end
function s.hlvop(e,tp,eg,ep,ev,re,r,rp)
	local hg=eg:Filter(s.hlvfilter,nil,tp,e:GetLabel())
	local tc=hg:GetFirst()
	for tc in aux.Next(hg) do
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_LEVEL)
		e1:SetValue(-1)
		e1:SetReset(RESET_EVENT|(RESETS_STANDARD_PHASE_END&~RESET_TOFIELD))
		tc:RegisterEffect(e1)
	end
end