Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
3 or more Level 2 monsters This card is unaffected by other monsters' effects. Once per turn, if a Trap Card(s) is sent from your Spell & Trap Zone to the Graveyard (except during the Damage Step): You can excavate the top card of your Deck, and if it is a Trap Card, add it to your hand. Otherwise, send it to the Graveyard. Once per turn, during either player's turn, if this card has a Trap Card as Xyz Material: You can detach 1 Xyz Material from this card, then target 1 card on the field; destroy it.
--バージェストマ・アノマロカリス
--Paleozoic Anomalocaris
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--Xyz Summon Procedure
	Xyz.AddProcedure(c,nil,2,3,nil,nil,Xyz.InfiniteMats)
	--Unnafected by monsters' effects
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_IMMUNE_EFFECT)
	e1:SetProperty(EFFECT_FLAG_SINGLE_RANGE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetValue(s.efilter)
	c:RegisterEffect(e1)
	--Excavate the top card of your Deck
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_TOHAND+CATEGORY_SEARCH+CATEGORY_DECKDES)
	e2:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e2:SetCode(EVENT_TO_GRAVE)
	e2:SetRange(LOCATION_MZONE)
	e2:SetProperty(EFFECT_FLAG_DELAY)
	e2:SetCountLimit(1)
	e2:SetCondition(s.condition)
	e2:SetTarget(s.target)
	e2:SetOperation(s.operation)
	c:RegisterEffect(e2)
	--Destroy 1 card on the field
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_DESTROY)
	e3:SetType(EFFECT_TYPE_QUICK_O)
	e3:SetCode(EVENT_FREE_CHAIN)
	e3:SetRange(LOCATION_MZONE)
	e3:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e3:SetCountLimit(1)
	e3:SetCondition(s.descon)
	e3:SetCost(Cost.DetachFromSelf(1,1,nil))
	e3:SetTarget(s.destg)
	e3:SetOperation(s.desop)
	c:RegisterEffect(e3)
end
function s.efilter(e,re)
	return re:IsMonsterEffect() and re:GetOwner()~=e:GetOwner()
end
function s.cfilter(c,tp)
	return c:IsTrap() and c:IsPreviousControler(tp) and c:IsPreviousLocation(LOCATION_STZONE)
end
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return eg:IsExists(s.cfilter,1,nil,tp)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	local tc=Duel.GetDecktopGroup(tp,1):GetFirst()
	if chk==0 then return Duel.IsPlayerCanDiscardDeck(tp,1) and tc:IsAbleToHand() end
end
function s.operation(e,tp,eg,ep,ev,re,r,rp)
	if not Duel.IsPlayerCanDiscardDeck(tp,1) then return end
	Duel.ConfirmDecktop(tp,1)
	local g=Duel.GetDecktopGroup(tp,1)
	local tc=g:GetFirst()
	if tc:IsTrap() and tc:IsAbleToHand() then
		Duel.DisableShuffleCheck()
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
		Duel.ShuffleHand(tp)
	else
		Duel.DisableShuffleCheck()
		Duel.SendtoGrave(tc,REASON_EFFECT|REASON_EXCAVATE)
	end
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	return e:GetHandler():GetOverlayGroup():IsExists(Card.IsTrap,1,nil)
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsOnField() end
	if chk==0 then return Duel.IsExistingTarget(nil,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
	local g=Duel.SelectTarget(tp,nil,tp,LOCATION_ONFIELD,LOCATION_ONFIELD,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_DESTROY,g,1,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.Destroy(tc,REASON_EFFECT)
	end
end