Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 "Crystal Beast" Monster Card you control; destroy it, then Special Summon 1 "Crystal Beast Token" with the destroyed monster's original Type, Attribute, Level, and ATK/DEF. If a "Crystal Beast" card(s) is placed in your Spell & Trap Zone while this card is in your GY, even during the Damage Step: You can banish this card; Special Summon 1 "Crystal Beast" Monster Card from your Spell & Trap Zone. You can only use this effect of "Crystal Aegis" once per turn.
--宝玉の加護
--Crystal Aegis
--Scripted by Hatter
local s,id=GetID()
function s.initial_effect(c)
	--Destroy 1 "Crystal Beast" Monster Card
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_DESTROY+CATEGORY_SPECIAL_SUMMON+CATEGORY_TOKEN)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetTarget(s.destg)
	e1:SetOperation(s.desop)
	c:RegisterEffect(e1)
	--Special Summon 1 "Crystal Beast" monster
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,1))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY+EFFECT_FLAG_DAMAGE_STEP)
	e2:SetCode(EVENT_MOVE)
	e2:SetRange(LOCATION_GRAVE)
	e2:SetCountLimit(1,id)
	e2:SetCondition(s.spcon)
	e2:SetCost(Cost.SelfBanish)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
end
s.listed_names={id+1}
s.listed_series={SET_CRYSTAL_BEAST}
function s.getprops(c)
	return math.max(0,c:GetTextAttack()),math.max(0,c:GetTextDefense()),
		c:GetOriginalLevel(),c:GetOriginalRace(),c:GetOriginalAttribute()
end
function s.desfilter(c,e,tp)
	return c:IsFaceup() and c:IsSetCard(SET_CRYSTAL_BEAST) and c:IsOriginalType(TYPE_MONSTER) and Duel.GetMZoneCount(tp,c)>0
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id+1,SET_CRYSTAL_BEAST,TYPES_TOKEN,s.getprops(c))
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsLocation(LOCATION_ONFIELD) and s.desfilter(chkc,e,tp) end
	if chk==0 then return Duel.IsExistingTarget(s.desfilter,tp,LOCATION_ONFIELD,0,1,nil,e,tp) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,s.desfilter,tp,LOCATION_ONFIELD,0,1,1,nil,e,tp)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,#g,0,0)
	Duel.SetOperationInfo(0,CATEGORY_TOKEN,nil,1,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and Duel.Destroy(tc,REASON_EFFECT)>0 and Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id+1,SET_CRYSTAL_BEAST,TYPES_TOKEN,s.getprops(tc)) then
		local token=Duel.CreateToken(tp,id+1)
		--Change Type, Attribute, Level, and ATK/DEF
		token:Race(tc:GetOriginalRace())
		token:Attribute(tc:GetOriginalAttribute())
		token:Level(tc:GetOriginalLevel())
		token:Attack(math.max(0,tc:GetTextAttack()))
		token:Defense(math.max(0,tc:GetTextDefense()))
		Duel.BreakEffect()
		Duel.SpecialSummon(token,0,tp,tp,false,false,POS_FACEUP)
	end
end
function s.spconfilter(c,tp)
	return c:IsFaceup() and c:IsSetCard(SET_CRYSTAL_BEAST) and c:IsLocation(LOCATION_SZONE) and not c:IsPreviousLocation(LOCATION_SZONE)
		and c:IsControler(tp) and c:GetSequence()<5
end
function s.spcon(e,tp,eg,ep,ev,re,r,rp)
	return eg and eg:IsExists(s.spconfilter,1,nil,tp)
end
function s.spfilter(c,e,tp)
	return c:IsFaceup() and c:IsSetCard(SET_CRYSTAL_BEAST) and c:IsCanBeSpecialSummoned(e,0,tp,false,false) and c:IsOriginalType(TYPE_MONSTER)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.spfilter,tp,LOCATION_SZONE,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_SZONE)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<1 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,s.spfilter,tp,LOCATION_SZONE,0,1,1,nil,e,tp)
	if #g>0 then
		Duel.SpecialSummon(g,0,tp,tp,false,false,POS_FACEUP)
	end
end