Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
2 Level 4 "lswarm" monsters While this card has Xyz Material, Level 5 or higher monsters cannot be Special Summoned. Once per turn: You can detach 1 Xyz Material from this card; add 1 "Infestation" Spell/Trap Card from your Deck to your hand.
--ヴェルズ・オピオン
--Evilswarm Ophion
local s,id=GetID()
function s.initial_effect(c)
	--xyz summon
	Xyz.AddProcedure(c,aux.FilterBoolFunctionEx(Card.IsSetCard,SET_LSWARM),4,2)
	c:EnableReviveLimit()
	--disable spsummon
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetRange(LOCATION_MZONE)
	e1:SetCode(EFFECT_CANNOT_SPECIAL_SUMMON)
	e1:SetProperty(EFFECT_FLAG_PLAYER_TARGET)
	e1:SetTargetRange(1,1)
	e1:SetTarget(s.sumlimit)
	e1:SetCondition(s.dscon)
	c:RegisterEffect(e1)
	--search
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetType(EFFECT_TYPE_IGNITION)
	e2:SetCountLimit(1)
	e2:SetRange(LOCATION_MZONE)
	e2:SetCost(Cost.DetachFromSelf(1))
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
end
s.listed_series={SET_INFESTATION,SET_LSWARM}
function s.dscon(e)
	return e:GetHandler():GetOverlayCount()~=0
end
function s.sumlimit(e,c,sump,sumtype,sumpos,targetp)
	return c:IsLevelAbove(5)
end
function s.filter(c)
	return c:IsSetCard(SET_INFESTATION) and c:IsAbleToHand()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.filter,tp,LOCATION_DECK,0,1,nil) end
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,nil,1,tp,LOCATION_DECK)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectMatchingCard(tp,s.filter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
		Duel.ConfirmCards(1-tp,g)
	end
end