Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
You can apply any of the following effects, in sequence, based on the number of "Solfachord" Pendulum Monster Cards you control with different names. ● 3+: Return 1 card from your Pendulum Zone to the hand, and if you do, place 1 face-up "Solfachord" Pendulum Monster from your Extra Deck in your Pendulum Zone. ● 5+: Special Summon 1 "Solfachord" Pendulum Monster from your hand. ● 7+: Destroy all face-up cards your opponent controls. You can only activate 1 "Solfachord Scale" per turn.
--ドレミコード・スケール
--Solfachord Scale
--Scripted by the Razgriz
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DESTROY+CATEGORY_SPECIAL_SUMMON+CATEGORY_TOHAND)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={SET_SOLFACHORD}
function s.filter(c)
	return c:IsFaceup() and c:IsOriginalType(TYPE_PENDULUM) and c:IsOriginalType(TYPE_MONSTER) and c:IsSetCard(SET_SOLFACHORD)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetMatchingGroupCount(s.filter,tp,LOCATION_ONFIELD,0,nil)>2
end
function s.spfilter(c,e,tp)
	return c:IsType(TYPE_PENDULUM) and c:IsSetCard(SET_SOLFACHORD) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_ONFIELD,0,nil)
	local ct=g:GetClassCount(Card.GetCode)
	local b1=Duel.IsExistingMatchingCard(Card.IsAbleToHand,tp,LOCATION_PZONE,0,1,nil) and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_EXTRA,0,1,nil) and ct>=3
	local b2=Duel.GetLocationCount(tp,LOCATION_MZONE)>0 and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_HAND,0,1,nil,e,tp) and ct>=5
	local b3=Duel.IsExistingMatchingCard(Card.IsFaceup,tp,0,LOCATION_ONFIELD,1,nil) and ct>=7
	if chk==0 then return (b1 or b2 or b3) end
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_ONFIELD,0,nil)
	local ct=g:GetClassCount(Card.GetCode)
	local b1=Duel.IsExistingMatchingCard(Card.IsAbleToHand,tp,LOCATION_PZONE,0,1,nil) and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_EXTRA,0,1,nil) and ct>=3
	local b2=Duel.GetLocationCount(tp,LOCATION_MZONE)>0 and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_HAND,0,1,nil,e,tp) and ct>=5
	local b3=Duel.IsExistingMatchingCard(Card.IsFaceup,tp,0,LOCATION_ONFIELD,1,nil) and ct>=7
	local flag=0
	if b1 and ((not b2 and not b3) or Duel.SelectYesNo(tp,aux.Stringid(id,0))) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RTOHAND)
		local thg=Duel.SelectMatchingCard(tp,Card.IsAbleToHand,tp,LOCATION_PZONE,0,1,1,nil)
		if Duel.SendtoHand(thg,tp,REASON_EFFECT)>0 and Duel.GetOperatedGroup():GetFirst():IsLocation(LOCATION_HAND) then
			Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOFIELD)
			local tpg=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_EXTRA,0,1,1,nil)
			if #tpg>0 then 
				Duel.MoveToField(tpg:GetFirst(),tp,tp,LOCATION_PZONE,POS_FACEUP,true)
			end
		end
		flag=1
		g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_ONFIELD,0,nil)
		ct=g:GetClassCount(Card.GetCode)
		b2=Duel.GetLocationCount(tp,LOCATION_MZONE)>0 and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_HAND,0,1,nil,e,tp) and ct>=5
		b3=Duel.IsExistingMatchingCard(Card.IsFaceup,tp,0,LOCATION_ONFIELD,1,nil) and ct>=7
	end
	if b2 and ((flag==0 and not b3) or Duel.SelectYesNo(tp,aux.Stringid(id,1))) then
		Duel.BreakEffect()
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local sg=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_HAND,0,1,1,nil,e,tp)
		if #sg>0 then
			Duel.SpecialSummon(sg,0,tp,tp,false,false,POS_FACEUP)
		end
		flag=1
		g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_ONFIELD,0,nil)
		ct=g:GetClassCount(Card.GetCode)
		b3=Duel.IsExistingMatchingCard(Card.IsFaceup,tp,0,LOCATION_ONFIELD,1,nil) and ct>=7
	end
	if b3 and (flag==0 or Duel.SelectYesNo(tp,aux.Stringid(id,2))) then
		Duel.BreakEffect()
		local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_ONFIELD,nil)
		Duel.Destroy(g,REASON_EFFECT)
		flag=1
	end
end