Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) by having 10 or more monsters in your GY. Once per turn: You can Special Summon 1 Level 8 or higher Fairy monster from your hand or GY, but its effects are negated, also its ATK becomes 4000.
--究極時械神セフィロン
--Sephylon, the Ultimate Timelord
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--cannot special summon
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE+EFFECT_FLAG_UNCOPYABLE)
	e1:SetCode(EFFECT_SPSUMMON_CONDITION)
	e1:SetValue(aux.FALSE)
	c:RegisterEffect(e1)
	--spsummon
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_FIELD)
	e2:SetCode(EFFECT_SPSUMMON_PROC)
	e2:SetProperty(EFFECT_FLAG_UNCOPYABLE)
	e2:SetRange(LOCATION_HAND)
	e2:SetCondition(s.spcon)
	c:RegisterEffect(e2)
	--spsummon
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,0))
	e3:SetCategory(CATEGORY_SPECIAL_SUMMON)
	e3:SetType(EFFECT_TYPE_IGNITION)
	e3:SetCountLimit(1)
	e3:SetRange(LOCATION_MZONE)
	e3:SetTarget(s.sptg)
	e3:SetOperation(s.spop)
	c:RegisterEffect(e3)
end
function s.spcon(e,c)
	if c==nil then return true end
	return Duel.GetLocationCount(c:GetControler(),LOCATION_MZONE)>0 and
		Duel.IsExistingMatchingCard(Card.IsMonster,c:GetControler(),LOCATION_GRAVE,0,10,nil)
end
function s.filter(c,e,tp)
	return c:IsRace(RACE_FAIRY) and c:GetLevel()>=8
		and c:IsCanBeSpecialSummoned(e,0,tp,false,false)
end
function s.sptg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_GRAVE|LOCATION_HAND,0,1,nil,e,tp) end
	Duel.SetOperationInfo(0,CATEGORY_SPECIAL_SUMMON,nil,1,tp,LOCATION_GRAVE|LOCATION_HAND)
end
function s.spop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_MZONE)<=0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
	local g=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.filter),tp,LOCATION_GRAVE|LOCATION_HAND,0,1,1,nil,e,tp)
	local c=e:GetHandler()
	local tc=g:GetFirst()
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_DISABLE)
	e1:SetReset(RESET_EVENT|(RESETS_STANDARD&~RESET_TOFIELD))
	tc:RegisterEffect(e1)
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetCode(EFFECT_DISABLE_EFFECT)
	e2:SetReset(RESET_EVENT|(RESETS_STANDARD&~RESET_TOFIELD))
	tc:RegisterEffect(e2)
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE)
	e3:SetCode(EFFECT_SET_ATTACK)
	e3:SetValue(4000)
	e3:SetReset(RESET_EVENT|(RESETS_STANDARD&~RESET_TOFIELD))
	tc:RegisterEffect(e3)
	Duel.SpecialSummon(tc,0,tp,tp,false,false,POS_FACEUP)
end