--created by Walrus, coded by Lyris, art from Shadowverse's "Death the Nyctophile"
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_SPSUMMON_SUCCESS)
	e1:SetProperty(EFFECT_FLAG_DELAY)
	e1:SetCategory(CATEGORY_TOGRAVE)
	e1:SetTarget(s.tgtg)
	e1:SetOperation(s.tgop)
	c:RegisterEffect(e1)
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCode(EFFECT_INDESTRUCTABLE_EFFECT)
	e2:SetValue(aux.indoval)
	c:RegisterEffect(e2)
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e3:SetCode(EVENT_LEAVE_FIELD)
	e3:SetCountLimit(1,id)
	e3:SetProperty(EFFECT_FLAG_DELAY)
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e3:SetCondition(s.spcon)
	e3:SetCost(s.spcost)
	e3:SetTarget(s.sptg)
	e3:SetOperation(s.spop)
	c:RegisterEffect(e3)
end
function s.tgtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsAbleToGrave,tp,0,LOCATION_MZONE,1,nil) end
end
function s.tgop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,Card.IsAbleToGrave,tp,0,LOCATION_MZONE,1,1,nil)
	Duel.HintSelection(g)
	Duel.SendtoGrave(g,REASON_EFFECT)
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:IsReason(REASON_BATTLE) or rp~=tp and c:IsReason(REASON_EFFECT)
end
function s.cfilter(c)
	return c:IsType(TYPE_MONSTER) and c:IsAbleToRemoveAsCost()
end
function s.spcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.CheckLPCost(tp,1000) and Duel.IsExistingMatchingCard(s.cfilter,tp,0,LOCATION_GRAVE,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
	local g=Duel.SelectMatchingCard(tp,s.cfilter,tp,0,LOCATION_GRAVE,1,1,nil)
	e:SetLabel(math.max(0,g:GetFirst():GetTextAttack()))
	Duel.Remove(g,POS_FACEUP,REASON_COST)
	Duel.PayLPCost(tp,1000)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0 and c:IsCanBeSpecialSummoned(e,0,tp,false,false) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,c,1,0,0)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not c:IsRelateToEffect(e) or Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)==0 then return end
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetValue(math.ceil(e:GetLabel()/2))
	e1:SetReset(RESET_EVENT+RESETS_STANDARD+RESET_DISABLE)
	c:RegisterEffect(e1)
end