Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
All monsters on the field lose 500 ATK/DEF, except Dinosaur monsters. Once per turn, if a Dinosaur monster is Normal or Special Summoned (except during the Damage Step): You can Special Summon 1 "Jurraegg Token" (Dinosaur/EARTH/Level 1/ATK 0/DEF 0) to your opponent's field in Defense Position. While your opponent controls a Token, they cannot target monsters on the field with card effects, except Tokens. Once per turn, if a Normal Monster(s) on the field would be destroyed by battle or card effect, you can destroy that many Dinosaur monsters in your hand and/or Deck instead.
--ロストワールド
--Lost World
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	c:RegisterEffect(e1)
	--Monsters lose 500 ATK/DEF
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_UPDATE_ATTACK)
	e2:SetRange(LOCATION_FZONE)
	e2:SetTargetRange(LOCATION_MZONE,LOCATION_MZONE)
	e2:SetTarget(aux.NOT(aux.TargetBoolFunction(Card.IsRace,RACE_DINOSAUR)))
	e2:SetValue(-500)
	c:RegisterEffect(e2)
	local e3=e2:Clone()
	e3:SetCode(EFFECT_UPDATE_DEFENSE)
	c:RegisterEffect(e3)
	--Special Summon 1 "Jurraegg Token"
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,0))
	e4:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_TOKEN)
	e4:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e4:SetProperty(EFFECT_FLAG_DELAY)
	e4:SetCode(EVENT_SUMMON_SUCCESS)
	e4:SetRange(LOCATION_FZONE)
	e4:SetCountLimit(1,0,EFFECT_COUNT_CODE_SINGLE)
	e4:SetCondition(s.tkcon)
	e4:SetTarget(s.tktg)
	e4:SetOperation(s.tkop)
	c:RegisterEffect(e4)
	local e5=e4:Clone()
	e5:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e5)
	--Opponent cannt target monster on the field, except Tokens
	local e6=Effect.CreateEffect(c)
	e6:SetType(EFFECT_TYPE_FIELD)
	e6:SetProperty(EFFECT_FLAG_IGNORE_IMMUNE+EFFECT_FLAG_SET_AVAILABLE)
	e6:SetCode(EFFECT_CANNOT_BE_EFFECT_TARGET)
	e6:SetRange(LOCATION_FZONE)
	e6:SetTargetRange(LOCATION_MZONE,LOCATION_MZONE)
	e6:SetCondition(s.tgcon)
	e6:SetTarget(aux.NOT(aux.TargetBoolFunction(Card.IsType,TYPE_TOKEN)))
	e6:SetValue(aux.tgoval)
	c:RegisterEffect(e6)
	--destroy replace
	local e7=Effect.CreateEffect(c)
	e7:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e7:SetCode(EFFECT_DESTROY_REPLACE)
	e7:SetRange(LOCATION_FZONE)
	e7:SetCountLimit(1)
	e7:SetTarget(s.reptg)
	e7:SetValue(s.repval)
	e7:SetOperation(s.repop)
	c:RegisterEffect(e7)
	local g=Group.CreateGroup()
	g:KeepAlive()
	e7:SetLabelObject(g)
end
s.listed_names={17228909} --"Jurraegg Token"
function s.tkcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(aux.FaceupFilter(Card.IsRace,RACE_DINOSAUR),1,nil,tp)
end
function s.tktg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(1-tp,LOCATION_MZONE)>0
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id+1,0,TYPES_TOKEN,0,0,1,RACE_DINOSAUR,ATTRIBUTE_EARTH,POS_FACEUP_DEFENSE,1-tp) end
	Duel.SetOperationInfo(0,CATEGORY_TOKEN,nil,1,0,0)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,0)
end
function s.tkop(e,tp,eg,ep,ev,re,r,rp)
	if e:GetHandler():IsRelateToEffect(e) and Duel.GetLocationCount(1-tp,LOCATION_MZONE)>0
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id+1,0,TYPES_TOKEN,0,0,1,RACE_DINOSAUR,ATTRIBUTE_EARTH,POS_FACEUP_DEFENSE,1-tp) then
		local token=Duel.CreateToken(tp,id+1)
		Duel.SpecialSummon(token,0,tp,1-tp,false,false,POS_FACEUP_DEFENSE)
	end
end
function s.tknfilter(c)
	return c:IsType(TYPE_TOKEN) or c:IsOriginalType(TYPE_TOKEN)
end
function s.tgcon(e)
	return Duel.IsExistingMatchingCard(s.tknfilter,e:GetHandlerPlayer(),0,LOCATION_ONFIELD,1,nil)
end
function s.repfilter(c,tp)
	return c:IsFaceup() and c:IsType(TYPE_NORMAL) and c:IsLocation(LOCATION_MZONE) and not c:IsReason(REASON_REPLACE)
		and c:IsReason(REASON_BATTLE|REASON_EFFECT) and not c:HasFlagEffect(id)
end
function s.desfilter(c,e)
	return c:IsRace(RACE_DINOSAUR) and c:IsDestructable(e)
		and not c:IsStatus(STATUS_DESTROY_CONFIRMED+STATUS_BATTLE_DESTROYED)
end
function s.reptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local ct=eg:FilterCount(s.repfilter,nil,tp)
	if chk==0 then return ct>0 and Duel.IsExistingMatchingCard(s.desfilter,tp,LOCATION_HAND|LOCATION_DECK,0,ct,nil,e) end
	if Duel.SelectEffectYesNo(tp,e:GetHandler(),96) then
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESREPLACE)
		local tg=Duel.SelectMatchingCard(tp,s.desfilter,tp,LOCATION_HAND|LOCATION_DECK,0,ct,ct,nil,e)
		local g=e:GetLabelObject()
		g:Clear()
		for tc in tg:Iter() do
			tc:RegisterFlagEffect(id,RESET_EVENT|(RESETS_STANDARD&~RESET_TURN_SET)|RESET_CHAIN,0,1)
			tc:SetStatus(STATUS_DESTROY_CONFIRMED,true)
			g:AddCard(tc)
		end
		return true
	else return false end
end
function s.repval(e,c)
	return s.repfilter(c,e:GetHandlerPlayer())
end
function s.repop(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_CARD,1-tp,id)
	local tg=e:GetLabelObject()
	for tc in tg:Iter() do
		tc:SetStatus(STATUS_DESTROY_CONFIRMED,false)
	end
	Duel.Destroy(tg,REASON_EFFECT|REASON_REPLACE)
end