Hidden Arsenal Card List and Set Guide

Overview

Hidden Arsenal is a 30-card set released November 5, 2009, with codes HA01-EN001 to HA01-EN030. 27 cards were new; the other three had appeared first in the 2009 5D's Starter Deck or a Duel Terminal preview, according to the catalog's release dates.

Every card in it is a foil: 15 Super Rares and 15 Secret Rares, with no Commons or Rares. It spreads those 30 cards across six small archetypes (Ice Barrier, Mist Valley, Flamvell, X-Saber, Ally of Justice and Worm), giving each a few monsters.

TCGplayer lists Limited Edition and Unlimited prices for every card, close to each other. This guide quotes Limited Edition.

Cards and rarities

Hidden Arsenal has 30 set codes, each starting HA01-EN and printed under the artwork on the right. Where a card comes at more than one rarity, every version shares its code, so the table counts set codes at each rarity and a code printed at two rarities is counted twice.

Each code is printed at a single rarity, so the rows add up to the set's 30 cards. Set completion in TurnZero HQ counts the distinct set codes you own against the set's total, so a card printed at two rarities counts once, with an every-rarity count beside it for collectors chasing each version. How set completion works →

The Synchros

The set's five Synchro Monsters are all Secret Rares, and they hold most of its value.

Brionac, Dragon of the Ice Barrier

HA01-EN022

An Ice Barrier Synchro: discard any number of cards to return that many of your opponent's cards to the hand, once per turn.

Ally of Justice Catastor

HA01-EN026

An Ally of Justice Synchro that destroys any face-up non-DARK monster it battles at the start of the Damage Step.

Mist Wurm

HA01-EN023

A Level 9 Synchro for a Tuner and 2 or more non-Tuners. When Synchro Summoned, return up to 3 of your opponent's cards to the hand.

Flamvell Uruquizas

HA01-EN024

A Flamvell Synchro that deals piercing damage and gains 300 ATK each time it deals battle damage.

Cards worth knowing

Some of the other archetype cards in the set.

X-Saber Airbellum

HA01-EN011

An X-Saber Tuner. When it deals battle damage with a direct attack, your opponent discards a random card.

X-Saber Urbellum

HA01-EN025

An X-Saber Synchro that, when it deals battle damage while your opponent holds 4 or more cards, puts one at random on top of their Deck.

The chase card: Brionac, Dragon of the Ice Barrier

Brionac, Dragon of the Ice Barrier

HA01-EN022

Rarity Secret Rare

Set code HA01-EN022

Limited market price, October 23, 2026 $20.88

The Secret Rare Brionac, Dragon of the Ice Barrier (HA01-EN022) was the set's most valuable card on October 23, 2026, at $20.88 as Limited Edition. The Secret Rare Ally of Justice Catastor was next at $20.31.

The Unlimited copy was $20.07, nearly the same.

It is a Level 6 WATER Sea Serpent Synchro Monster with 2300 ATK. Once per turn you can discard any number of cards to return the same number of cards your opponent controls to the hand.

Rarity is in the foil rather than the set code, so check it before you price the copy in your hand. Reading the set code and rarity →

Chase cards and prices

Brionac and Ally of Justice Catastor were within a dollar of each other at the top on October 23, 2026. Hidden Arsenal's prices are low across the board.

These are TCGplayer's Limited market prices on October 23, 2026. They move daily, so treat them as a snapshot. Each card's page shows today's price for every printing. How Yu-Gi-Oh! card prices work →

Hidden Arsenal card list

Every set code in Hidden Arsenal, in set code order, with each rarity it is printed at: 30 set codes in all, as listed in TurnZero HQ's catalog on October 23, 2026. Each name goes to that card's page, with today's price for every printing.

Playing it

No Hidden Arsenal card is on the Forbidden & Limited List as of October 23, 2026, so a deck can run three copies of any of them.

With only a few cards per archetype, Hidden Arsenal is a set to add to an existing Ice Barrier, X-Saber or Flamvell deck rather than one to build a deck from on its own.

Deck building rules and the Forbidden & Limited List →

Frequently Asked Questions