Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Send 1 Level 7 "Red-Eyes" monster from your hand to the GY; draw 2 cards, then you can send 1 Level 7 "Red-Eyes" monster from your Deck to the GY. You can only activate 1 "Cards of the Red Stone" per turn.
--紅玉の宝札
--Cards of the Red Stone
local s,id=GetID()
function s.initial_effect(c)
	--activate
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_DRAW)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={SET_RED_EYES}
function s.cfilter(c)
	return c:IsSetCard(SET_RED_EYES) and c:GetLevel()==7 and c:IsAbleToGraveAsCost()
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,nil) end
	Duel.DiscardHand(tp,s.cfilter,1,1,REASON_COST,nil)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp,2) end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(2)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,2)
	Duel.SetPossibleOperationInfo(0,CATEGORY_TOGRAVE,nil,1,tp,LOCATION_DECK)
end
function s.tgfilter(c)
	return c:IsSetCard(SET_RED_EYES) and c:GetLevel()==7 and c:IsAbleToGrave()
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	local dr=Duel.Draw(p,d,REASON_EFFECT)
	local g=Duel.GetMatchingGroup(s.tgfilter,p,LOCATION_DECK,0,nil)
	if dr~=0 and #g>0 and Duel.SelectYesNo(p,aux.Stringid(id,0)) then
		Duel.BreakEffect()
		Duel.Hint(HINT_SELECTMSG,p,HINTMSG_TOGRAVE)
		local sg=g:Select(p,1,1,nil)
		Duel.SendtoGrave(sg,REASON_EFFECT)
	end
end