--created by ZEN, coded by Lyris
local s,id=GetID()
function s.initial_effect(c)
	local e1=Effect.CreateEffect(c)
	e1:Desc(0)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	local e2=Effect.CreateEffect(c)
	e2:Desc(1)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
	e2:SetRange(LOCATION_SZONE)
	e2:SetCountLimit(1,id)
	e2:SetCategory(CATEGORY_TOHAND)
	e2:SetCondition(function(e,tp,eg) return eg:IsExists(function(tc) return tc:GetSummonPlayer()~=tp end,1,nil) end)
	e2:SetCost(s.cost)
	e2:SetTarget(s.thtg)
	e2:SetOperation(s.thop)
	c:RegisterEffect(e2)
	local e3=Effect.CreateEffect(c)
	e3:Desc(2)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e3:SetCode(EVENT_TO_GRAVE)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e3:SetCategory(CATEGORY_TOHAND)
	e3:SetCondition(s.con)
	e3:SetTarget(s.target)
	e3:SetOperation(s.operation)
	c:RegisterEffect(e3)
end
function s.cfilter(c)
	return c:IsFaceup() and c:IsSetCard(0xd7c) and c:GetSequence()<5 and c:IsAbleToGraveAsCost()
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_SZONE,0,1,c) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,s.cfilter,tp,LOCATION_SZONE,0,1,1,c)
	if #g>0 then
		Duel.SendtoGrave(g,REASON_COST)
	end
end
function s.filter(c,tp)
	return c:GetSummonPlayer()~=tp
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk)
	local g=eg:Filter(s.filter,nil,tp)
	if chk==0 then return #g>0 and g:IsExists(Card.IsAbleToHand,1,nil) end
	Duel.SetTargetCard(eg)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,#g,0,0)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	if not e:GetHandler():IsRelateToEffect(e) then return end
	local g=eg:Filter(s.filter,nil,tp):Filter(Card.IsRelateToEffect,nil,e)
	if #g<0 then return end
	Duel.SendtoHand(g,nil,REASON_EFFECT)
end
function s.con(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():IsReason(REASON_COST) and e:GetHandler():IsPreviousLocation(LOCATION_SZONE) and e:GetHandler():GetPreviousSequence()<5 and re:IsHasType(0x7e0) and re:IsActiveType(TYPE_MONSTER)
		and re:GetHandler():IsSetCard(0xd7c)
end
function s.thfilter(c)
	return c:IsType(TYPE_SPELL+TYPE_TRAP) and c:IsSetCard(0xd7c) and c:IsAbleToHand() and not c:IsCode(id)
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.thfilter(chkc) end
	if chk==0 then return true end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectTarget(tp,aux.NecroValleyFilter(s.thfilter),tp,LOCATION_GRAVE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,#g,0,0)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc and tc:IsRelateToEffect(e) then Duel.SendtoHand(tc,nil,REASON_EFFECT) end
end