--守護竜の核醒
function c11908584.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--special summon
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(11908584,0))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_QUICK_O)
	e2:SetCode(EVENT_FREE_CHAIN)
	e2:SetRange(LOCATION_SZONE)
	e2:SetHintTiming(0,TIMING_END_PHASE)
	e2:SetCountLimit(1,11908584)
	e2:SetCost(c11908584.spcost)
	e2:SetTarget(c11908584.sptg)
	e2:SetOperation(c11908584.spop)
	c:RegisterEffect(e2)
end
function c11908584.costfilter(c)
	return c:IsType(TYPE_EFFECT) and c:IsAbleToGraveAsCost()
end
function c11908584.spcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(c11908584.costfilter,tp,LOCATION_HAND,0,1,nil) end
	Duel.DiscardHand(tp,c11908584.costfilter,1,1,REASON_COST)
end
function c11908584.spfilter(c,e,tp)
	return c:IsType(TYPE_NORMAL) and c:IsRace(RACE_DRAGON) and c:IsLevelBelow(4)
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEUP_DEFENSE)
end
function c11908584.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(c11908584.spfilter,tp,LOCATION_HAND+LOCATION_DECK+LOCATION_GRAVE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND+LOCATION_DECK+LOCATION_GRAVE)
end
function c11908584.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) or Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(c11908584.spfilter),tp,LOCATION_HAND+LOCATION_DECK+LOCATION_GRAVE,0,1,1,nil,e,tp)
	if g:GetCount()>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP_DEFENSE)
	end
end