--Dracosis Trade-Out
local s,id=GetID()
function s.initial_effect(c)
	--activate
	local e0=Effect.CreateEffect(c)
	e0:Desc(0)
	e0:SetType(EFFECT_TYPE_ACTIVATE)
	e0:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e0)
	--search
	local e1=Effect.CreateEffect(c)
	e1:Desc(1)
	e1:SetCategory(CATEGORIES_SEARCH)
	e1:SetType(EFFECT_TYPE_FIELD|EFFECT_TYPE_TRIGGER_F)
	e1:SetCode(EVENT_TO_DECK)
	e1:SetRange(LOCATION_SZONE)
	e1:SetCountLimit(2,id+EFFECT_COUNT_CODE_OATH)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.cfilter(c,tp)
	if not c:IsControler(tp) then return false end
	return (c:IsSetCard(0x300) and c:IsType(TYPE_MONSTER))
		or (c:IsPreviousLocation(LOCATION_MZONE) and c:IsPreviousPosition(POS_FACEUP) and c:IsPreviousTypeOnField(TYPE_MONSTER) and c:IsPreviousSetCard(0x300))
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.cfilter,1,nil,tp)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetFlagEffect(tp,id)==0 end
	local g=eg:Filter(aux.NOT(Card.IsPreviousPosition),nil,POS_FACEUP)
	if #g>0 then
		Duel.ConfirmCards(1-tp,g)
	end
	Duel.RegisterFlagEffect(tp,id,RESET_CHAIN,0,1)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function s.filter(c)
	return c:IsSetCard(0x300) and c:IsType(TYPE_MONSTER) and c:IsAbleToHand()
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.Select(HINTMSG_ATOHAND,false,tp,s.filter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 then
		Duel.Search(g,tp)
	end
end