Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Once per turn, you can send 1 Dragon-Type monster from your hand to the Graveyard to add 1 Dragon-Type monster from your Graveyard to your hand. When this card is sent from the field to the Graveyard, you can return all Dragon-Type monsters from your Graveyard to your Deck.
--創世竜
--Genesis Dragon
local s,id=GetID()
function s.initial_effect(c)
	--salvage
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOHAND)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCost(s.thcost)
	e1:SetTarget(s.thtg)
	e1:SetOperation(s.thop)
	c:RegisterEffect(e1)
	--return to deck
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_TODECK)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetCondition(s.tdcon)
	e2:SetTarget(s.tdtg)
	e2:SetOperation(s.tdop)
	c:RegisterEffect(e2)
end
function s.cfilter(c)
	return c:IsRace(RACE_DRAGON) and c:IsAbleToGraveAsCost()
end
function s.thcost(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)
end
function s.thfilter(c)
	return c:IsRace(RACE_DRAGON) and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.thfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.thfilter,tp,LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectTarget(tp,s.thfilter,tp,LOCATION_GRAVE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,0,0)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,tc)
	end
end
function s.tdcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
end
function s.tdfilter(c)
	return c:IsRace(RACE_DRAGON) and c:IsAbleToDeck()
end
function s.tdtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.tdfilter,tp,LOCATION_GRAVE,0,1,nil) end
	local g=Duel.GetMatchingGroup(s.tdfilter,tp,LOCATION_GRAVE,0,nil)
	Duel.SetOperationInfo(0,CATEGORY_TODECK,g,1,0,0)
end
function s.tdop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(s.tdfilter,tp,LOCATION_GRAVE,0,nil)
	Duel.SendtoDeck(g,nil,SEQ_DECKSHUFFLE,REASON_EFFECT)
end