Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Once per turn, you can add 1 Level 7 or higher monster from your hand to your Deck and shuffle it, then draw 1 card.
--軽量化
--Lighten the Load
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--draw
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_TODECK+CATEGORY_DRAW)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCountLimit(1)
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
end
function s.filter(c)
	return c:IsLevelAbove(7) and c:IsAbleToDeck()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp)
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_HAND,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TODECK,nil,1,tp,LOCATION_HAND)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	if not Duel.IsPlayerCanDraw(tp) then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TODECK)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_HAND,0,1,1,nil)
	if #g>0 then
		Duel.ConfirmCards(1-tp,g)
		Duel.SendtoDeck(g,nil,SEQ_DECKTOP,REASON_EFFECT)
		Duel.ShuffleDeck(tp)
		Duel.BreakEffect()
		Duel.Draw(tp,1,REASON_EFFECT)
	end
end