Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Once per turn, during either player's turn: You can banish 1 "Ritual Beast" card from your Graveyard; for the rest of this turn, all "Ritual Beast" monsters you control will gain 500 ATK and DEF. You can only Special Summon "Spiritual Beast Apelio(s)" once per turn.
--精霊獣 アペライオ
--Spiritual Beast Apelio
local s,id=GetID()
function s.initial_effect(c)
	c:SetSPSummonOnce(id)
	--atk
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_QUICK_O)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetRange(LOCATION_MZONE)
	e1:SetProperty(EFFECT_FLAG_DAMAGE_STEP)
	e1:SetHintTiming(TIMING_DAMAGE_STEP,TIMING_DAMAGE_STEP|TIMINGS_CHECK_MONSTER)
	e1:SetCountLimit(1)
	e1:SetCondition(aux.StatChangeDamageStepCondition)
	e1:SetCost(s.atkcost)
	e1:SetOperation(s.atkop)
	c:RegisterEffect(e1)
end
s.listed_series={SET_RITUAL_BEAST}
function s.cfilter(c)
	return c:IsSetCard(SET_RITUAL_BEAST) and c:IsAbleToRemoveAsCost() and aux.SpElimFilter(c,true)
end
function s.atkcost(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.cfilter,tp,LOCATION_MZONE|LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_REMOVE)
	local g=Duel.SelectMatchingCard(tp,s.cfilter,tp,LOCATION_MZONE|LOCATION_GRAVE,0,1,1,nil)
	Duel.Remove(g,POS_FACEUP,REASON_COST)
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp)
	local e1=Effect.CreateEffect(e:GetHandler())
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetTarget(s.atktg)
	e1:SetValue(500)
	e1:SetReset(RESET_PHASE|PHASE_END)
	Duel.RegisterEffect(e1,tp)
	local e2=e1:Clone()
	e2:SetCode(EFFECT_UPDATE_DEFENSE)
	Duel.RegisterEffect(e2,tp)
end
function s.atktg(e,c)
	return c:IsSetCard(SET_RITUAL_BEAST)
end