Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Target 1 "Melodious" monster you control; this turn, that face-up monster you control is unaffected by your opponent's Spell/Trap effects, and it can make a second attack during each Battle Phase.
--幻奏のイリュージョン
--Melodious Illusion
local s,id=GetID()
function s.initial_effect(c)
	--Targeted "Melodious" monster becomes unaffected by opponent's card effects, also can attack twice
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	e1:SetHintTiming(0,TIMING_BATTLE_START|TIMING_END_PHASE)
	c:RegisterEffect(e1)
end
s.listed_series={SET_MELODIOUS}
function s.filter(c)
	return c:IsFaceup() and c:IsSetCard(SET_MELODIOUS)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_MZONE) and chkc:IsControler(tp) and s.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_MZONE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_FACEUP)
	Duel.SelectTarget(tp,s.filter,tp,LOCATION_MZONE,0,1,1,nil)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) and tc:IsFaceup() and tc:IsControler(tp) then
		--Unaffected by opponent's card effects
		local e1=Effect.CreateEffect(c)
		e1:SetDescription(3110)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE+EFFECT_FLAG_CLIENT_HINT)
		e1:SetRange(LOCATION_MZONE)
		e1:SetCode(EFFECT_IMMUNE_EFFECT)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		e1:SetValue(s.efilter)
		e1:SetOwnerPlayer(tp)
		tc:RegisterEffect(e1)
		--Can make a second attack
		local e2=Effect.CreateEffect(c)
		e2:SetDescription(3201)
		e2:SetProperty(EFFECT_FLAG_CLIENT_HINT)
		e2:SetType(EFFECT_TYPE_SINGLE)
		e2:SetCode(EFFECT_EXTRA_ATTACK)
		e2:SetReset(RESETS_STANDARD_PHASE_END)
		e2:SetValue(1)
		tc:RegisterEffect(e2)
	end
end
function s.efilter(e,re)
	return e:GetOwnerPlayer()~=re:GetOwnerPlayer() and re:IsSpellTrapEffect()
end