--火雷神サンダーボールド
--Thunderbold, the Blazing Thunder
local s,id=GetID()
function s.initial_effect(c)
	--Increase ATK
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_ATKCHANGE+CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCountLimit(1)
	e1:SetCondition(function(e) return e:GetHandler():IsStatus(STATUS_SUMMON_TURN) end)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDiscardDeckAsCost(tp,1) end
end
function s.spfilter(c,e,tp)
	return c:IsLevel(7) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
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()
	--Increase ATK
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetValue(300)
	e1:SetReset(RESETS_STANDARD_PHASE_END)
	c:RegisterEffect(e1)
	local g=Duel.GetMatchingGroup(Card.IsLevel,tp,LOCATION_GRAVE,0,nil,7)
	if g:GetClassCount(Card.GetCode)>=4 and Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.SelectYesNo(tp,aux.Stringid(id,0)) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
		if #g>0 then
			Duel.BreakEffect()
			Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
		end
	end
end
