Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
1 Tuner + 1+ non-Tuner monsters Your monsters with 2000 or less ATK cannot be destroyed by battle. You can only use each of the following effects of "Centur-Ion Legatia" once per turn. If this card is Special Summoned: You can draw 1 card, then you can destroy the monster your opponent controls with the highest ATK (your choice, if tied). During the End Phase: You can place 1 non-Synchro "Centur-Ion" monster from your hand or GY in your Spell & Trap Zone as a face-up Continuous Trap.
--騎士皇レガーティア
--Centur-Ion Legatia
--Scripted by Hatter
local s,id=GetID()
function s.initial_effect(c)
	c:EnableReviveLimit()
	--1 Tuner + 1+ non-Tuner monsters
	Synchro.AddProcedure(c,nil,1,1,Synchro.NonTuner(nil),1,99)
	--Monsters with 2000 or less ATK cannot be destroyed by battle.
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_FIELD)
	e1:SetCode(EFFECT_INDESTRUCTABLE_BATTLE)
	e1:SetRange(LOCATION_MZONE)
	e1:SetTargetRange(LOCATION_MZONE,0)
	e1:SetTarget(aux.TargetBoolFunction(Card.IsAttackBelow,2000))
	e1:SetValue(1)
	c:RegisterEffect(e1)
	--Draw 1 card
	local e2=Effect.CreateEffect(c)
	e2:SetDescription(aux.Stringid(id,0))
	e2:SetCategory(CATEGORY_DRAW+CATEGORY_DESTROY)
	e2:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e2:SetProperty(EFFECT_FLAG_DELAY)
	e2:SetCode(EVENT_SPSUMMON_SUCCESS)
	e2:SetCountLimit(1,id)
	e2:SetTarget(s.drtg)
	e2:SetOperation(s.drop)
	c:RegisterEffect(e2)
	--Place 1 non-Synchro "Centurion" monster in the Spell/Trap Zone as Continuous Trap
	local e3=Effect.CreateEffect(c)
	e3:SetDescription(aux.Stringid(id,1))
	e3:SetCategory(CATEGORY_LEAVE_GRAVE)
	e3:SetType(EFFECT_TYPE_FIELD+EFFECT_TYPE_TRIGGER_O)
	e3:SetCode(EVENT_PHASE+PHASE_END)
	e3:SetRange(LOCATION_MZONE)
	e3:SetCountLimit(1,{id,1})
	e3:SetTarget(s.pltg)
	e3:SetOperation(s.plop)
	c:RegisterEffect(e3)
end
s.listed_series={SET_CENTURION}
function s.drtg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsPlayerCanDraw(tp,1) end
	Duel.SetTargetPlayer(tp)
	Duel.SetTargetParam(1)
	Duel.SetOperationInfo(0,CATEGORY_DRAW,nil,0,tp,1)
	Duel.SetPossibleOperationInfo(0,CATEGORY_DESTROY,nil,1,1-tp,LOCATION_MZONE)
end
function s.drop(e,tp,eg,ep,ev,re,r,rp)
	local p,d=Duel.GetChainInfo(0,CHAININFO_TARGET_PLAYER,CHAININFO_TARGET_PARAM)
	if Duel.Draw(p,d,REASON_EFFECT)==0 then return end
	local g=Duel.GetMatchingGroup(Card.IsFaceup,tp,0,LOCATION_MZONE,nil)
	if #g==0 or not Duel.SelectYesNo(tp,aux.Stringid(id,2)) then return end
	local mg=g:GetMaxGroup(Card.GetAttack)
	if #mg==1 then
		Duel.HintSelection(mg,true)
		Duel.BreakEffect()
		Duel.Destroy(mg,REASON_EFFECT)
	else
		Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_DESTROY)
		local tg=mg:Select(tp,1,1,nil)
		if #tg==0 then return end
		Duel.HintSelection(tg,true)
		Duel.BreakEffect()
		Duel.Destroy(tg,REASON_EFFECT)
	end
end
function s.plfilter(c)
	return c:IsSetCard(SET_CENTURION) and c:IsMonster() and not c:IsType(TYPE_SYNCHRO) and not c:IsForbidden()
end
function s.pltg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.GetLocationCount(tp,LOCATION_SZONE)>0
		and Duel.IsExistingMatchingCard(s.plfilter,tp,LOCATION_HAND|LOCATION_GRAVE,0,1,nil) end
	Duel.SetPossibleOperationInfo(0,CATEGORY_LEAVE_GRAVE,nil,1,tp,LOCATION_GRAVE)
end
function s.plop(e,tp,eg,ep,ev,re,r,rp)
	if Duel.GetLocationCount(tp,LOCATION_SZONE)==0 then return end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_TOFIELD)
	local tc=Duel.SelectMatchingCard(tp,aux.NecroValleyFilter(s.plfilter),tp,LOCATION_HAND|LOCATION_GRAVE,0,1,1,nil):GetFirst()
	if tc and Duel.MoveToField(tc,tp,tp,LOCATION_SZONE,POS_FACEUP,true) then
		--Treat as Continuous Trap
		local e1=Effect.CreateEffect(e:GetHandler())
		e1:SetType(EFFECT_TYPE_SINGLE)
		e1:SetProperty(EFFECT_FLAG_CANNOT_DISABLE)
		e1:SetCode(EFFECT_CHANGE_TYPE)
		e1:SetValue(TYPE_TRAP|TYPE_CONTINUOUS)
		e1:SetReset((RESET_EVENT|RESETS_STANDARD)&~RESET_TURN_SET)
		tc:RegisterEffect(e1)
	end
end