--Worm Omega
function c213120.initial_effect(c)
	--SpecialSummon
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(213120,0))
	e1:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetProperty(EFFECT_FLAG_DELAY)
	e1:SetCountLimit(1,213120)
	e1:SetTarget(c213120.sptg)
	e1:SetOperation(c213120.spop)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetCode(EVENT_FLIP)
	c:RegisterEffect(e2)
	--indes
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_FIELD)
	e3:SetCode(EFFECT_INDESTRUCTABLE_BATTLE)
	e3:SetRange(LOCATION_MZONE)
	e3:SetTargetRange(LOCATION_MZONE,0)
	e3:SetTarget(c213120.indtg)
	e3:SetValue(1)
	c:RegisterEffect(e3)
end
function c213120.spfilter(c,e,tp)
	return c:IsSetCard(0x3e) and c:IsRace(RACE_REPTILE) and not c:IsCode(213120)
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false,POS_FACEDOWN_DEFENSE)
end
function c213120.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(c213120.spfilter,tp,LOCATION_HAND+LOCATION_DECK,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_HAND+LOCATION_DECK)
end
function c213120.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,c213120.spfilter,tp,LOCATION_HAND+LOCATION_DECK,0,1,1,nil,e,tp)
	local tc=g:GetFirst()
	if tc then
		Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEDOWN_DEFENSE)
		Duel.ConfirmCards(1-tp,tc)
	end
end
function c213120.indtg(e,c)
	return c:IsSetCard(0x3e) and c:IsRace(RACE_REPTILE)
end