Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Monsters your opponent controls cannot attack "World Legacy" monsters you control, except this one. You can only use each of the following effects of "World Legacy - "World Lance"" once per turn. ● During damage calculation, if a Link Monster battles a monster (Quick Effect): You can discard this card; the opponent's battling monster loses 3000 ATK. ● If a monster(s) is Special Summoned from the Extra Deck: Special Summon 1 "World Legacy Token" (Machine/DARK/Level 1/ATK 0/DEF 0) to both players' fields in Defense Position.
--星遺物－『星槍』
--World Legacy - "World Lance"
local s,id=GetID()
function s.initial_effect(c)
	--atkdown
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_ATKCHANGE)
	e1:SetType(EFFECT_TYPE_QUICK_O)
	e1:SetCode(EVENT_PRE_DAMAGE_CALCULATE)
	e1:SetRange(LOCATION_HAND)
	e1:SetCountLimit(1,id)
	e1:SetCondition(s.atkcon)
	e1:SetCost(Cost.SelfDiscard)
	e1:SetOperation(s.atkop)
	c:RegisterEffect(e1)
	--cannot target
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_CANNOT_SELECT_BATTLE_TARGET)
	e2:SetRange(LOCATION_MZONE)
	e2:SetTargetRange(0,LOCATION_MZONE)
	e2:SetValue(s.atktg)
	c:RegisterEffect(e2)
	--token
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_TOKEN)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_F)
	e3:SetProperty(EFFECT_FLAG_DELAY)
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1,{id,1})
	e3:SetCondition(s.tkcon)
	e3:SetTarget(s.tktg)
	e3:SetOperation(s.tkop)
	c:RegisterEffect(e3)
end
s.listed_names={TOKEN_WORLD_LEGACY}
s.listed_series={SET_WORLD_LEGACY}
function s.atkcon(e,tp,eg,ep,ev,re,r,rp)
	local a=Duel.GetAttacker()
	local d=Duel.GetAttackTarget()
	if not (a and d) then return false end
	if a:IsControler(1-tp) then a,d=d,a end
	e:SetLabelObject(d)
	local g=Group.FromCards(a,d)
	return a and d and a:IsRelateToBattle() and d:IsRelateToBattle() and g:IsExists(Card.IsType,1,nil,TYPE_LINK)
end
function s.atkop(e,tp,eg,ep,ev,re,r,rp,chk)
	local tc=e:GetLabelObject()
	if tc and tc:IsFaceup() and tc:IsRelateToBattle() then
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetCode(EFFECT_UPDATE_ATTACK)
		e1:SetValue(-3000)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e1)
	end
end
function s.atktg(e,c)
	return c:IsFaceup() and c:IsSetCard(SET_WORLD_LEGACY) and c~=e:GetHandler()
end
function s.tkcon(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(Card.IsSummonLocation,1,nil,LOCATION_EXTRA)
end
function s.tktg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_TOKEN,nil,2,0,0)
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,2,tp,0)
end
function s.tkop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)>0 and Duel.GetLocationCount(1-tp,LOCATION_MZONE)>0 and not Duel.IsPlayerAffectedByEffect(tp,CARD_BLUEEYES_SPIRIT)
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id+1,SET_WORLD_LEGACY,TYPES_TOKEN,0,0,1,RACE_MACHINE,ATTRIBUTE_DARK,POS_FACEUP_DEFENSE)
		and Duel.IsPlayerCanSpecialSummonMonster(tp,id+1,SET_WORLD_LEGACY,TYPES_TOKEN,0,0,1,RACE_MACHINE,ATTRIBUTE_DARK,POS_FACEUP_DEFENSE,1-tp) then
		local t1=Duel.CreateToken(tp,id+1)
		local t2=Duel.CreateToken(tp,id+1)
		Duel.SpecialSummonStep(t1,0,tp,tp,false,false,POS_FACEUP_DEFENSE)
		Duel.SpecialSummonStep(t2,0,tp,1-tp,false,false,POS_FACEUP_DEFENSE)
		Duel.SpecialSummonComplete()
	end
end