--
local s,id,o=GetID()
function s.initial_effect(c)
	--xyz summon
	aux.AddXyzProcedure(c,aux.FilterBoolFunction(Card.IsSetCard,0x172),4,2)
	c:EnableReviveLimit()
	--set
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetProperty(EFFECT_FLAG_DELAY)
	e1:SetCountLimit(1,id)
	e1:SetCondition(s.recon)
	e1:SetOperation(s.reop)
	c:RegisterEffect(e1)
	--change effect
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetCode(EVENT_CHAINING)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCountLimit(1,id+o)
	e2:SetCondition(s.chcon)
	e2:SetTarget(s.chtg)
	e2:SetOperation(s.chop)
	c:RegisterEffect(e2)
end
function s.recon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsSummonType(SUMMON_TYPE_XYZ)
end
function s.reop(e,tp,eg,ep,ev,re,r,rp)
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e1:SetCode(EVENT_PHASE+PHASE_END)
	e1:SetCountLimit(1)
	e1:SetOperation(s.setop)
	e1:SetReset(RESET_PHASE+PHASE_END)
	Duel.RegisterEffect(e1,tp)
end
function s.setfilter(c)
	return c:IsFaceupEx() and c:IsSetCard(0x172) and c:IsType(TYPE_SPELL+TYPE_TRAP) and c:IsSSetable()
end
function s.setop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_CARD,0,id)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SET)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.setfilter),tp,LOCATION_DECK+LOCATION_GRAVE+LOCATION_REMOVED,0,1,1,nil)
	local tc=g:GetFirst()
	if tc then
		Duel.SSet(tp,tc)
	end
end
function s.chcon(e,tp,eg,ep,ev,re,r,rp)
	return rp==1-tp and (re:IsActiveType(TYPE_MONSTER)
		or (re:GetActiveType()==TYPE_SPELL or re:GetActiveType()==TYPE_TRAP) and re:IsHasType(EFFECT_TYPE_ACTIVATE))
end
function s.chtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsAbleToHand,rp,0,LOCATION_GRAVE,1,nil,REASON_EFFECT)
		and e:GetHandler():GetOverlayCount()>0 end
end
function s.chop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToChain() and c:IsFaceup() then
		local og=c:GetOverlayGroup()
		if og:GetCount()==0 then return end
		Duel.SendtoGrave(og,REASON_EFFECT)
		local g=Group.CreateGroup()
		Duel.ChangeTargetCard(ev,g)
		Duel.ChangeChainOperation(ev,s.repop)
	end
end
function s.repop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,Card.IsAbleToHand,tp,0,LOCATION_GRAVE,1,1,nil)
	if g:GetCount()>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end