Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If this card is in your hand: You can discard 2 or more "Fabled" monsters, including this card, and if you do, Special Summon 1 "Fabled" Synchro Monster from your Extra Deck whose Level equals the discarded monsters' total original Levels (this is treated as a Synchro Summon). If a card(s) is sent from your hand to the GY, while this card is in your GY (except during the Damage Step): You can banish this card; Special Summon 1 "Fabled" monster from your hand. You can only use each effect of "The Fabled Behilmoth" once per turn.
--魔轟神獣ベヒルモス
--The Fabled Behilmoth
--Scripted by The Razgriz
local s,id=GetID()
function s.initial_effect(c)
	--Discard 2 or more "Fabled" monsters and Special Summon 1 "Fabled" Synchro Monster from your Extra Deck
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_HANDES+CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_HAND)
	e1:SetCountLimit(1,id)
	e1:SetTarget(s.extrasptg)
	e1:SetOperation(s.extraspop)
	c:RegisterEffect(e1)
	--Special Summon 1 "Fabled" monster from your hand
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY,EFFECT_FLAG2_CHECK_SIMULTANEOUS)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCountLimit(1,{id,1})
	e2:SetCondition(s.handspcon)
	e2:SetCost(Cost.SelfBanish)
	e2:SetTarget(s.handsptg)
	e2:SetOperation(s.handspop)
	c:RegisterEffect(e2)
end
s.listed_series={SET_FABLED}
function s.discardfilter(c)
	return c:IsSetCard(SET_FABLED) and c:IsMonster() and c:HasLevel() and c:IsDiscardable(REASON_EFFECT)
end
function s.rescon(sg,e,tp,mg)
	return Duel.IsExistingMatchingCard(s.extraspfilter,tp,LOCATION_EXTRA,0,1,nil,e,tp,sg:GetSum(Card.GetOriginalLevel)+e:GetHandler():GetOriginalLevel())
end
function s.extraspfilter(c,e,tp,lv)
	return c:IsSetCard(SET_FABLED) and c:IsType(TYPE_SYNCHRO) and c:IsLevel(lv)
		and Duel.GetLocationCountFromEx(tp,tp,nil,c)>0
		and c:IsCanBeSpecialSummoned(e,SUMMON_TYPE_SYNCHRO,tp,false,false)
end
function s.extrasptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then
		local pg=aux.GetMustBeMaterialGroup(tp,Group.CreateGroup(),tp,nil,nil,REASON_SYNCHRO)
		if #pg>0 then return false end
		local c=e:GetHandler()
		local g=Duel.GetMatchingGroup(s.discardfilter,tp,LOCATION_HAND,0,c)
		return s.discardfilter(c) and #g>0 and aux.SelectUnselectGroup(g,e,tp,1,#g,s.rescon,0)
	end
	Duel.SetOperationInfo(0,CATEGORY_HANDES,nil,0,tp,2)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_EXTRA)
end
function s.extraspop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) then return end
	local g=Duel.GetMatchingGroup(s.discardfilter,tp,LOCATION_HAND,0,c)
	if #g==0 then return end
	local rg=aux.SelectUnselectGroup(g,e,tp,1,#g,s.rescon,1,tp,HINTMSG_DISCARD)
	if #rg==0 then return end
	rg:AddCard(c)
	if Duel.SendtoGrave(rg,REASON_DISCARD|REASON_EFFECT)==0 then return end
	local pg=aux.GetMustBeMaterialGroup(tp,Group.CreateGroup(),tp,nil,nil,REASON_SYNCHRO)
	if #pg>0 then return end
	local lv=rg:GetSum(Card.GetOriginalLevel)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local sc=Duel.SelectMatchingCard(tp,s.extraspfilter,tp,LOCATION_EXTRA,0,1,1,nil,e,tp,lv):GetFirst()
	if sc and Duel.SpecialSummon(sc,SUMMON_TYPE_SYNCHRO,tp,tp,false,false,POS_FACEUP)>0 then
		sc:CompleteProcedure()
	end
end
function s.handspconfilter(c,tp)
	return c:IsPreviousControler(tp) and c:IsPreviousLocation(LOCATION_HAND)
end
function s.handspcon(e,tp,eg,ep,ev,re,r,rp)
	return not eg:IsContains(e:GetHandler()) and eg:IsExists(s.handspconfilter,1,nil,tp)
end
function s.handspfilter(c,e,tp)
	return c:IsSetCard(SET_FABLED) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.handsptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.handspfilter,tp,LOCATION_HAND,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND)
end
function s.handspop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.handspfilter,tp,LOCATION_HAND,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end