Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
(This card is always treated as a "Millennium" card.) If a Level 5 or higher Monster Card is on the field, you can Normal Summon this card without Tributing. If your opponent Normal or Special Summons a monster(s) in Attack Position, increase its Level by 7 while this monster is on the field. When your opponent activates a monster effect (Quick Effect): You can send 1 other face-up Level 5 or higher Monster Card you control to the GY; negate the activation, and if you do, destroy that card. You can only use this effect of "Soul of Gaia the Fierce Knight" once per turn.
--魂宿りし暗黒騎士ガイア
--Soul of Gaia the Fierce Knight
--scripted by pyrQ
local s,id=GetID()
function s.initial_effect(c)
	--If a Level 5 or higher Monster Card is on the field, you can Normal Summon this card without Tributing
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_SUMMON)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetProperty(EFFECT_FLAG_UNCOPYABLE)
	e1:SetCode(EFFECT_SUMMON_PROC)
	e1:SetRange(LOCATION_HAND)
	e1:SetCondition(s.nscon)
	c:RegisterEffect(e1)
	--If your opponent Normal or Special Summons a monster(s) in Attack Position, increase its Level by 7
	local e2=Effect.CreateEffect(c)
	e2:SetCategory(CATEGORY_LVCHANGE)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_CONTINUOUS)
	e2:SetCode(EVENT_SUMMON_SUCCESS)
	e2:SetRange(LOCATION_MZONE)
	e2:SetOperation(s.lvop)
	c:RegisterEffect(e2)
	local e3=e2:Clone()
	e3:SetCode(EVENT_SPSUMMON_SUCCESS)
	c:RegisterEffect(e3)
	--Negate the activation of an opponent's monster effect, and if you do, destroy that card
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,1))
	e4:SetCategory(CATEGORY_NEGATE+CATEGORY_DESTROY)
	e4:SetType(EFFECT_TYPE_QUICK_O)
	e4:SetProperty(EFFECT_FLAG_DAMAGE_STEP+EFFECT_FLAG_DAMAGE_CAL)
	e4:SetCode(EVENT_CHAINING)
	e4:SetRange(LOCATION_MZONE)
	e4:SetCountLimit(1,id)
	e4:SetCondition(function(e,tp,eg,ep,ev,re,r,rp) return ep==1-tp and re:IsMonsterEffect() and not e:GetHandler():IsStatus(STATUS_BATTLE_DESTROYED) and Duel.IsChainNegatable(ev) end)
	e4:SetCost(s.negcost)
	e4:SetTarget(s.negtg)
	e4:SetOperation(s.negop)
	c:RegisterEffect(e4)
end
s.listed_series={SET_MILLENNIUM}
function s.lv5plusmonfilter(c)
	return c:IsLevelAbove(5) and c:IsMonsterCard() and c:IsFaceup()
end
function s.nscon(e,c)
	if c==nil then return true end
	return Duel.GetLocationCount(c:GetControler(),LOCATION_MZONE)>0
		and Duel.IsExistingMatchingCard(s.lv5plusmonfilter,0,LOCATION_ONFIELD,LOCATION_ONFIELD,1,nil)
end
function s.lvfilter(c,tp)
	return c:IsSummonPlayer(1-tp) and c:IsAttackPos() and c:IsFaceup() and c:HasLevel()
end
function s.lvop(e,tp,eg,ep,ev,re,r,rp)
	local g=eg:Filter(s.lvfilter,nil,tp)
	if #g==0 then return end
	local c=e:GetHandler()
	for tc in g:Iter() do
		--Increase its Level by 7
		local e1=Effect.CreateEffect(c)
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_UPDATE_LEVEL)
		e1:SetValue(7)
		e1:SetReset(RESET_EVENT|RESETS_STANDARD)
		tc:RegisterEffect(e1)
	end
end
function s.negcost(e,tp,eg,ep,ev,re,r,rp,chk)
	local c=e:GetHandler()
	if chk==0 then return Duel.IsExistingMatchingCard(aux.AND(s.lv5plusmonfilter,Card.IsAbleToGraveAsCost),tp,LOCATION_ONFIELD,0,1,c) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOGRAVE)
	local g=Duel.SelectMatchingCard(tp,aux.AND(s.lv5plusmonfilter,Card.IsAbleToGraveAsCost),tp,LOCATION_ONFIELD,0,1,1,c)
	Duel.SendtoGrave(g,REASON_COST)
end
function s.negtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	local rc=re:GetHandler()
	Duel.SetOperationInfo(0,CATEGORY_NEGATE,eg,1,tp,0)
	if rc:IsDestructable() and rc:IsRelateToEffect(re) then
		Duel.SetOperationInfo(0,CATEGORY_DESTROY,eg,1,tp,0)
	end
end
function s.negop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.NegateActivation(ev) and re:GetHandler():IsRelateToEffect(re) then
		Duel.Destroy(eg,REASON_EFFECT)
	end
end