Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Your opponent cannot target Level 6 or lower "Artmage" monsters you control with card effects. You can only use each of the following effects of "Artmage Finmel" once per turn. If you control an "Artmage" card: You can Special Summon this card from your hand, then you can draw 1 card. During the Main Phase, if you have 3 or more different Monster Types on your field (Quick Effect): You can negate the effects of all face-up monsters your opponent currently controls, also until the end of this turn, their ATK's become halved.
--神芸学徒 ファインメルト
--Artmage Finmel
--Scripted by Hatter
local s,id=GetID()
function s.initial_effect(c)
	--Your opponent cannot target Level 6 or lower "Artmage" monsters you control with card effects
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetProperty(EFFECT_FLAG_IGNORE_IMMUNE)
	e1:SetCode(EFFECT_CANNOT_BE_EFFECT_TARGET)
	e1:SetRange(LOCATION_MZONE)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetTarget(function(e,c) return c:IsLevelBelow(6) and c:IsSetCard(SET_ARTMAGE) end)
	e1:SetValue(aux.tgoval)
	c:RegisterEffect(e1)
	--Special Summon this card from your hand, then you can draw 1 card
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_SPECIAL_SUMMON+CATEGORY_DRAW)
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetRange(LOCATION_HAND)
	e2:SetCountLimit(1,id)
	e2:SetCondition(function(e,tp) return Duel.IsExistingMatchingCard(aux.FaceupFilter(Card.IsSetCard,SET_ARTMAGE),tp,LOCATION_ONFIELD,0,1,nil) end)
	e2:SetTarget(s.sptg)
	e2:SetOperation(s.spop)
	c:RegisterEffect(e2)
	--Negate the effects of all face-up monsters your opponent currently controls, also their current ATK become halved until the end of this turn
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_DISABLE+CATEGORY_ATKCHANGE)
	e3:SetType(EFFECT_TYPE_QUICK_O)
	e3:SetCode(EVENT_FREE_CHAIN)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1,{id,1})
	e3:SetHintTiming(0,TIMING_MAIN_END|TIMINGS_CHECK_MONSTER)
	e3:SetCondition(function(e,tp) return Duel.IsMainPhase() and Duel.GetMatchingGroup(Card.IsFaceup,tp,LOCATION_MZONE,0,nil):GetBinClassCount(Card.GetRace)>=3 end)
	e3:SetTarget(s.distg)
	e3:SetOperation(s.disop)
	c:RegisterEffect(e3)
end
s.listed_series={SET_ARTMAGE}
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,c,1,0,0)
	Duel.SetPossibleOperationInfo(0,CATEGORY_DRAW,nil,1,tp,1)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if c:IsRelateToEffect(e) and Duel.SpecialSummon(c,0,tp,tp,false,false,POS_FACEUP)>0
		and Duel.IsPlayerCanDraw(tp,1) and Duel.SelectYesNo(tp,aux.Stringid(id,2)) then
		Duel.BreakEffect()
		Duel.Draw(tp,1,REASON_EFFECT)
	end
end
function s.distg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(Card.IsFaceup,tp,0,LOCATION_MZONE,1,nil) end
end
function s.disop(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_MZONE,0)
	if #g==0 then return end
	local c=e:GetHandler()
	for tc in g:Iter() do
		if tc:IsNegatableMonster() then tc:NegateEffects(c) end
		--Its ATK becomes halved until the end of this turn
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_SET_ATTACK_FINAL)
		e1:SetValue(tc:GetAttack()/2)
		e1:SetReset(RESETS_STANDARD_PHASE_END)
		tc:RegisterEffect(e1)
	end
end