--セブンスフィアー・マジシャン
--Sevens Fear Magician
--Scripted by YoshiDuels
local s,id=GetID()
function s.initial_effect(c)
	--Name change
	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
s.listed_names={CARD_SEVENS_ROAD_MAGICIAN}
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(CARD_SEVENS_ROAD_MAGICIAN) end
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 "Sevens Road Magician"
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
	e1:SetCode(EFFECT_CHANGE_CODE)
	e1:SetValue(CARD_SEVENS_ROAD_MAGICIAN)
	e1:SetReset(RESETS_STANDARD_PHASE_END)
	c:RegisterEffect(e1)
	local att=Duel.GetMatchingGroup(Card.IsMonster,tp,LOCATION_GRAVE,0,nil):GetClassCount(Card.GetAttribute)
	if att>0 and Duel.IsExistingMatchingCard(Card.IsFaceup,tp,0,LOCATION_MZONE,1,nil) and Duel.SelectYesNo(tp,aux.Stringid(id,1)) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATKDEF)
		local dg=Duel.SelectMatchingCard(tp,aux.FilterMaximumSideFunctionEx(Card.IsFaceup),tp,0,LOCATION_MZONE,1,1,nil)
		Duel.HintSelection(dg)
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetValue(-300*att)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		dg:GetFirst():RegisterEffect(e1)
	end
end