--ティスティナの戯れ
local s,id,o=GetID()
function s.initial_effect(c)
	--spummon
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id+EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.filter(c,e,tp)
	return c:IsSetCard(0x1a4) and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEUP_DEFENSE)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_HAND+LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND+LOCATION_GRAVE)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.filter),tp,LOCATION_HAND+LOCATION_GRAVE,0,1,1,nil,e,tp)
	local tc=g:GetFirst()
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	if tc and Duel.SpecialSummonStep(tc,0,tp,tp,false,false,POS_FACEUP_DEFENSE) then
		local e1=Effect.CreateEffect(e:GetHandler())
			e1:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
			e1:SetProperty(EFFECT_FLAG_IGNORE_IMMUNE)
			e1:SetRange(LOCATION_MZONE)
			e1:SetCode(EVENT_PHASE+PHASE_END)
			e1:SetOperation(s.thop)
			e1:SetReset(RESET_EVENT+RESETS_STANDARD)
			e1:SetCountLimit(1)
			tc:RegisterEffect(e1)
	end
	Duel.SpecialSummonComplete()
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	Duel.SendtoHand(e:GetHandler(),nil,REASON_EFFECT)
end
