--異星戦隊 ビッグ・バン
local s,id,o=GetID()
function s.initial_effect(c)
	--spsummon
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_IGNITION)
	e1:SetRange(LOCATION_HAND)
	e1:SetCountLimit(1,id)
	e1:SetCondition(s.spcon)
	e1:SetTarget(s.sptg)
	e1:SetOperation(s.spop)
	c:RegisterEffect(e1)
	--lvdown
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1,id+o)
	e2:SetTarget(s.lvtg)
	e2:SetOperation(s.lvop)
	c:RegisterEffect(e2)
	--destroy
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,2))
	e3:SetCategory(CATEGORY_DESTROY)
	e3:SetType(EFFECT_TYPE_QUICK_O)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCode(EVENT_FREE_CHAIN)
	e3:SetHintTiming(TIMING_SPSUMMON,TIMING_BATTLE_START)
	e3:SetCountLimit(1,id+o*2)
	e3:SetCondition(s.descon)
	e3:SetTarget(s.destg)
	e3:SetOperation(s.desop)
	c:RegisterEffect(e3)
end
function s.cfilter(c)
	return c:IsSummonLocation(LOCATION_EXTRA)
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_MZONE,LOCATION_MZONE,1,nil)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and e:GetHandler():IsCanBeSpecialSummoned(e,0,tp,false,false) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,e:GetHandler(),1,0,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) then
		Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)
	end
end
function s.filter(c)
	return c:IsFaceup() and c:IsLevelAbove(1)
end
function s.lvtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_MZONE,LOCATION_MZONE,1,e:GetHandler()) and e:GetHandler():IsLevelAbove(1) end
end
function s.lvop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local g=Duel.GetMatchingGroup(s.filter,tp,LOCATION_MZONE,LOCATION_MZONE,c)
	local tc=g:GetFirst()
	local count=0
	while tc do
		local lvbf=tc:GetLevel()
		local e1=Effect.CreateEffect(c)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_LEVEL)
		e1:SetValue(-1)
		e1:SetReset(RESET_EVENT+RESETS_STANDARD)
		tc:RegisterEffect(e1)
		local lvaf=tc:GetLevel()
		if lvbf>lvaf then
			count=count+1
		end
		tc=g:GetNext()
	end
	if count>0 then
		local e1=Effect.CreateEffect(c)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_LEVEL)
		e1:SetValue(count)
		e1:SetReset(RESET_EVENT+RESETS_STANDARD)
		c:RegisterEffect(e1)
	end
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsLevelAbove(8) then return false end
	local ph=Duel.GetCurrentPhase()
	if Duel.GetTurnPlayer()==1-tp then
		return ph==PHASE_MAIN1 or ph==PHASE_MAIN2
	else
		return (ph>=PHASE_BATTLE_START and ph<=PHASE_BATTLE)
	end
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(aux.TRUE,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,e:GetHandler()) end
	Duel.Hint(HINT_OPSELECTED,1-tp,e:GetDescription())
	local g=Duel.GetMatchingGroup(aux.TRUE,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,e:GetHandler())
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,1,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectMatchingCard(tp,aux.TRUE,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,1,e:GetHandler())
	if g:GetCount()>0 then
		Duel.HintSelection(g)
		if Duel.Destroy(g,REASON_EFFECT)>0 and not c:IsLevel(5) and c:IsFaceup() then
			local e1=Effect.CreateEffect(c)
			e1:SetType(EFFECT_TYPE_SINGLE)
			e1:SetCode(EFFECT_CHANGE_LEVEL)
			e1:SetValue(5)
			e1:SetReset(RESET_EVENT+RESETS_STANDARD)
			c:RegisterEffect(e1)
		end
	end
end