Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target any number of Level 7 or 8 Dragon Synchro Monsters in your GY; Special Summon them in Defense Position, but their Levels become 1 and their effects are negated, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Synchro Monsters. When a Synchro Monster you control is destroyed by battle: You can banish this card from your GY; Special Summon 1 "Crimson Dragon" from your Extra Deck. You can only use each effect of "Synchro Overtop" once per turn.
--シンクロ・オーバートップ
--Synchro Overtop
--scripted by Naim
local s,id=GetID()
function s.initial_effect(c)
	--Special Summon any number of Level 7 and/or 8 Dragon Synchro Monsters from the GY
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
	--Special Summon 1 "The Crimson Dragon" from the Extra Deck
	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:SetCode(EVENT_BATTLE_DESTROYED)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCountLimit(1,{id,1})
	e2:SetCondition(s.spcon)
	e2:SetCost(Cost.SelfBanish)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
end
s.listed_names={CARD_CRIMSON_DRAGON}
function s.spfilter1(c,e,tp)
	return c:IsRace(RACE_DRAGON) and c:IsType(TYPE_SYNCHRO) and c:IsLevel(7,8)
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEUP_DEFENSE)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.spfilter1(chkc,e,tp) end
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingTarget(s.spfilter1,tp,LOCATION_GRAVE,0,1,nil,e,tp) end
	local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
	if Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT) then ft=1 end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectTarget(tp,s.spfilter1,tp,LOCATION_GRAVE,0,1,ft,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,#g,0,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	--Cannot Special Summon from the Extra Deck, except Synchro Monsters
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,2))
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET+EFFECT_FLAG_CLIENT_HINT)
	e1:SetCode(EFFECT_CANNOT_SPECIAL_SUMMON)
	e1:SetTargetRange(1,0)
	e1:SetTarget(function(_,c) return c:IsLocation(LOCATION_EXTRA) and not c:IsType(TYPE_SYNCHRO) end)
	e1:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e1,tp)
	--Clock Lizard check
	aux.addTempLizardCheck(c,tp,function(_,c) return not c:IsOriginalType(TYPE_SYNCHRO) end)
	--Special Summon targets from the GY
	local ft=Duel.GetLocationCount(tp,LOCATION_MZONE)
	if ft<=0 then return end
	local g=Duel.GetTargetCards(e)
	if #g==0 or (#g>1 and Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT)) then return end
	if #g>ft then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		g=g:Select(tp,ft,ft,nil)
	end
	for tc in g:Iter() do
		if Duel.SpecialSummonStep(tc,0,tp,tp,false,false,POS_FACEUP_DEFENSE) then
			--Negate their effects
			local e1=Effect.CreateEffect(c)
			e1:SetType(EFFECT_TYPE_SINGLE)
			e1:SetCode(EFFECT_DISABLE)
			e1:SetReset(RESET_EVENT|RESETS_STANDARD)
			tc:RegisterEffect(e1,true)
			local e2=e1:Clone()
			e2:SetCode(EFFECT_DISABLE_EFFECT)
			e2:SetValue(RESET_TURN_SET)
			tc:RegisterEffect(e2,true)
			--Change Level to 1
			local e3=e1:Clone()
			e3:SetCode(EFFECT_CHANGE_LEVEL)
			e3:SetValue(1)
			tc:RegisterEffect(e3,true)
		end
	end
	Duel.SpecialSummonComplete()
end
function s.cfilter(c,tp)
	return c:IsType(TYPE_SYNCHRO) and c:IsPreviousLocation(LOCATION_MZONE) and c:IsPreviousControler(tp)
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.cfilter,1,nil,tp)
end
function s.spfilter2(c,e,tp)
	return c:IsCode(CARD_CRIMSON_DRAGON) and Duel.GetLocationCountFromEx(tp,tp,nil,c)
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.spfilter2,tp,LOCATION_EXTRA,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_EXTRA)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.spfilter2,tp,LOCATION_EXTRA,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end