--雷源龍－サンダー・ドラゴン
function c20318029.initial_effect(c)
	--atkup
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(20318029,0))
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_QUICK_O)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetRange(LOCATION_HAND)
	e1:SetHintTiming(TIMING_DAMAGE_STEP+TIMING_END_PHASE)
	e1:SetCountLimit(1,20318029)
	e1:SetCondition(aux.dscon)
	e1:SetCost(c20318029.atkcost)
	e1:SetTarget(c20318029.atktg)
	e1:SetOperation(c20318029.atkop)
	c:RegisterEffect(e1)
	c20318029.discard_effect=e1
	--search
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(20318029,1))
	e2:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_REMOVE)
	e2:SetProperty(EFFECT_FLAG_DELAY)
	e2:SetCountLimit(1,20318029)
	e2:SetTarget(c20318029.thtg)
	e2:SetOperation(c20318029.thop)
	c:RegisterEffect(e2)
	local e3=e2:Clone()
	e3:SetCode(EVENT_TO_GRAVE)
	e3:SetCondition(c20318029.thcon)
	c:RegisterEffect(e3)
end
function c20318029.atkcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return e:GetHandler():IsDiscardable() end
	Duel.SendtoGrave(e:GetHandler(),REASON_COST+REASON_DISCARD)
end
function c20318029.atkfilter(c)
	return c:IsFaceup() and c:IsRace(RACE_THUNDER)
end
function c20318029.atktg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_MZONE) and c20318029.atkfilter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(c20318029.atkfilter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TARGET)
	Duel.SelectTarget(tp,c20318029.atkfilter,tp,LOCATION_MZONE,0,1,1,nil)
end
function c20318029.atkop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and tc:IsFaceup() then
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetValue(500)
		e1:SetReset(RESET_EVENT+RESETS_STANDARD)
		tc:RegisterEffect(e1)
	end
end
function c20318029.thcon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsPreviousLocation(LOCATION_ONFIELD)
end
function c20318029.thfilter(c)
	return c:IsCode(20318029) and c:IsAbleToHand()
end
function c20318029.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(c20318029.thfilter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function c20318029.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,c20318029.thfilter,tp,LOCATION_DECK,0,1,1,nil)
	if g:GetCount()>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end
