--ロードスターの魔剣士
--Magical Swordsman of Roadstar
--Scripted by YoshiDuels
local s,id=GetID()
function s.initial_effect(c)
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDiscardDeckAsCost(tp,1) end
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return not c:IsCode(160204021) end
end
function s.spfilter(c,e,tp)
	return c:IsCode(160016024) and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEUP_DEFENSE)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	-- Requirement
	if Duel.DiscardDeck(tp,1,REASON_COST)<1 then return end
	--Effect
	local c=e:GetHandler()
	--Name becomes "Blue-Eyes White Dragon"
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
	e1:SetCode(EFFECT_CHANGE_CODE)
	e1:SetValue(160204021)
	e1:SetReset(RESETS_STANDARD_PHASE_END)
	c:RegisterEffect(e1)
	local g=Duel.GetMatchingGroup(aux.NecroValleyFilter(s.spfilter),tp,LOCATION_GRAVE,0,nil,e,tp)
	if #g>0 and Duel.GetLocationCount(tp,LOCATION_MZONE)>0 and Duel.SelectYesNo(tp,aux.Stringid(id,1)) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local sg=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
		if #sg>0 then
			Duel.BreakEffect()
			Duel.SpecialSummon(sg,0,tp,tp,false,false,POS_FACEUP_DEFENSE)
		end
	end
end