--NREM Thanatosa
local cid,id=GetID()
function cid.initial_effect(c)
	c:EnableReviveLimit()
	--destroy
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DESTROY)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DELAY+EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetCountLimit(1,id)
	e1:SetTarget(cid.destg)
	e1:SetOperation(cid.desop)
	c:RegisterEffect(e1)
	local e2=e1:Clone()
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCondition(cid.descon)
	c:RegisterEffect(e2)
	--Protect Nightmare
	local e9=Effect.CreateEffect(c)
	e9:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e9:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DELAY)
	e9:SetCode(EVENT_RELEASE)
	e9:SetCondition(cid.indcon)
	e9:SetOperation(cid.atop)
	c:RegisterEffect(e9)
end
function cid.descon(e,tp,eg,ep,ev,re,r,rp)
	return not eg:IsContains(e:GetHandler()) and eg:IsExists(Card.IsControler,1,nil,1-tp)
end
function cid.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(1-tp) end
	if chk==0 then return Duel.IsExistingTarget(aux.TRUE,tp,0,LOCATION_MZONE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,aux.TRUE,tp,0,LOCATION_MZONE,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,g:GetCount(),0,0)
end
function cid.desop(e,tp,eg,ep,ev,re,r,rp)
    local c=e:GetHandler()
    local tc=Duel.GetFirstTarget()
    local sq=tc:GetSequence()
    if tc:IsControler(1-tp) then sq=sq+16 end
    if tc:IsRelateToEffect(e) and Duel.Destroy(tc,REASON_EFFECT)~=0 then
        local e1=Effect.CreateEffect(c)
        e1:SetType(EFFECT_TYPE_FIELD)
        e1:SetRange(LOCATION_MZONE)
        e1:SetCode(EFFECT_DISABLE_FIELD)
        e1:SetReset(RESET_EVENT+RESETS_STANDARD)
        e1:SetOperation(cid.disop)
        e1:SetLabel(sq)
        c:RegisterEffect(e1)
    end
end
function cid.disop(e,tp)
    local dis1=bit.lshift(0x1,e:GetLabel())
    return dis1
end
function cid.indcon(e,tp,eg,ep,ev,re,r,rp)
	return Duel.IsExistingTarget(cid.filter2,tp,LOCATION_MZONE,0,1,nil,tp)
end
function cid.filter2(c)
	return c:IsFaceup() and c:IsType(TYPE_RITUAL)
end
function cid.atop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(cid.filter2,tp,LOCATION_MZONE,0,nil)
	local tc=g:GetFirst()
	local c=e:GetHandler()
	while tc do
		--indes
		local e2=Effect.CreateEffect(c)
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
		e2:SetRange(LOCATION_MZONE)
		e2:SetReset(RESET_EVENT+RESETS_STANDARD)
		e2:SetValue(1)
		tc:RegisterEffect(e2)
		tc=g:GetNext()
	end
end