--星遺物に眠る深層
--World Legacy's Secret
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetHintTiming(0,TIMING_END_PHASE)
	e1:SetTarget(s.target)
	c:RegisterEffect(e1)
	--destroy
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_CONTINUOUS+EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
	e2:SetCode(EVENT_LEAVE_FIELD_P)
	e2:SetOperation(s.checkop)
	c:RegisterEffect(e2)
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_CONTINUOUS+EFFECT_TYPE_SINGLE)
	e3:SetCode(EVENT_LEAVE_FIELD)
	e3:SetOperation(s.desop)
	e3:SetLabelObject(e2)
	c:RegisterEffect(e3)
	--disable
	local e4=Effect.CreateEffect(c)
	e4:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e4:SetCode(EVENT_CHAIN_SOLVING)
	e4:SetRange(LOCATION_SZONE)
	e4:SetCondition(s.discon)
	e4:SetOperation(s.disop)
	c:RegisterEffect(e4)
end
s.listed_series={SET_MEKK_KNIGHT}
function s.spfilter(c,e,tp)
	return c:IsLevelAbove(5) and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.spfilter(chkc,e,tp) end
	if chk==0 then return true end
	if Duel.IsExistingTarget(s.spfilter,tp,LOCATION_GRAVE,0,1,nil,e,tp)
		and Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.SelectYesNo(tp,aux.Stringid(id,0)) then
		e:SetCategory(CATEGORY_SPECIAL_SUMMON)
		e:SetProperty(EFFECT_FLAG_CARD_TARGET)
		e:SetOperation(s.activate)
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
		local g=Duel.SelectTarget(tp,s.spfilter,tp,LOCATION_GRAVE,0,1,1,nil,e,tp)
		Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,g,1,0,0)
	else
		e:SetCategory(0)
		e:SetProperty(0)
		e:SetOperation(nil)
	end
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if c:IsRelateToEffect(e) and tc:IsRelateToEffect(e)
		and Duel.SpecialSummonStep(tc,0,tp,tp,false,false,POS_FACEUP) then
		c:SetCardTarget(tc)
		Duel.SpecialSummonComplete()
	end
end
function s.checkop(e,tp,eg,ep,ev,re,r,rp)
	if e:GetHandler():IsDisabled() then
		e:SetLabel(1)
	else e:SetLabel(0) end
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	if e:GetLabelObject():GetLabel()~=0 then return end
	local tc=e:GetHandler():GetFirstCardTarget()
	if tc and tc:IsLocation(LOCATION_MZONE) then
		Duel.Destroy(tc,REASON_EFFECT)
	end
end
function s.cfilter(c,seq,p)
	return c:IsFaceup() and c:IsSetCard(SET_MEKK_KNIGHT) and c:IsColumn(seq,p,LOCATION_MZONE)
end
function s.discon(e,tp,eg,ep,ev,re,r,rp)
	if rp==tp or not re:IsMonsterEffect() then return false end
	local rc=re:GetHandler()
	local p,loc,seq=Duel.GetChainInfo(ev,CHAININFO_TRIGGERING_CONTROLER,CHAININFO_TRIGGERING_LOCATION,CHAININFO_TRIGGERING_SEQUENCE)
	return loc==LOCATION_MZONE and Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_MZONE,0,1,nil,seq,p)
end
function s.disop(e,tp,eg,ep,ev,re,r,rp)
	Duel.NegateEffect(ev)
end