Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
1 Dragon Tuner + 1+ non-Tuner Winged Beast monsters Once per turn: You can add 1 Level 4 or lower Dragon or Winged Beast monster from your Deck to your hand, then discard 1 Dragon or Winged Beast monster.
--ドラグニティナイト－ガジャルグ
--Dragunity Knight - Gae Dearg
local s,id=GetID()
function s.initial_effect(c)
	--synchro summon
	Synchro.AddProcedure(c,aux.FilterBoolFunctionEx(Card.IsRace,RACE_DRAGON),1,1,Synchro.NonTunerEx(Card.IsRace,RACE_WINGEDBEAST),1,99)
	c:EnableReviveLimit()
	--search
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH+CATEGORY_HANDES)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetCountLimit(1)
	e1:SetRange(LOCATION_MZONE)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.filter(c)
	return c:IsLevelBelow(4) and c:IsRace(RACE_DRAGON|RACE_WINGEDBEAST) and c:IsAbleToHand()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
	Duel.SetOperationInfo(0,CATEGORY_HANDES,nil,1,tp,1)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_DECK,0,1,1,nil)
	if #g==0 then return end
	Duel.SendtoHand(g,nil,REASON_EFFECT)
	Duel.ConfirmCards(1-tp,g)
	Duel.ShuffleHand(tp)
	Duel.BreakEffect()
	Duel.DiscardHand(tp,Card.IsRace,1,1,REASON_EFFECT|REASON_DISCARD,nil,RACE_DRAGON|RACE_WINGEDBEAST)
end