Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
1 Tuner + 1 or more non-Tuner monsters When this card inflicts Battle Damage to your opponent while they have 4 or more cards in their hand, place 1 random card from their hand on top of their Deck.
--X－セイバー ウルベルム
--X-Saber Urbellum
local s,id=GetID()
function s.initial_effect(c)
	--synchro summon
	Synchro.AddProcedure(c,nil,1,1,Synchro.NonTuner(nil),1,99)
	c:EnableReviveLimit()
	--handes
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_TODECK)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_F)
	e1:SetCode(EVENT_BATTLE_DAMAGE)
	e1:SetCondition(s.condition)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)
	c:RegisterEffect(e1)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return ep~=tp and Duel.GetFieldGroupCount(tp,0,LOCATION_HAND)>=4
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_TODECK,nil,1,1-tp,LOCATION_HAND)
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetFieldGroup(ep,LOCATION_HAND,0)
	if #g==0 then return end
	local sg=g:RandomSelect(1-tp,1)
	Duel.SendtoDeck(sg,nil,SEQ_DECKTOP,REASON_EFFECT)
end