Hidden Arsenal 5: Steelswarm Invasion Card List and Set Guide

Overview

Hidden Arsenal 5: Steelswarm Invasion is a 60-card set released December 1, 2011, with codes HA05-EN001 to HA05-EN060. Every card first appeared in the Duel Terminal 5 sets, according to the catalog.

It is all foil, 40 Super Rares and 20 Secret Rares, across seven archetypes: Laval (12), Gem- (11), Gishki and Gusto (10 each), Vylon and Steelswarm (7 each) and Infestation (2). The Gem-Knights, which Fusion Summon with each other, and the Gishki, which Ritual Summon, are the groups later sets built on most.

Its prices are among the lowest in this list. On October 23, 2026 no printing was above $5 in 1st Edition, and none of its cards is on the Forbidden & Limited List.

Cards and rarities

Hidden Arsenal 5: Steelswarm Invasion has 60 set codes, each starting HA05-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 60 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 archetypes

Cards from the set's main groups.

Gem-Armadillo

HA05-EN005

When Normal Summoned, add a Gem-Knight monster from your Deck to your hand.

Gem-Knight Ruby

HA05-EN019

A Gem-Knight Fusion of Gem-Knight Garnet and another Gem-Knight. It Tributes a Gem- monster to gain its ATK.

Gishki Ariel

HA05-EN035

When flipped, add a Gishki monster from your Deck to your hand.

Evigishki Mind Augus

HA05-EN051

A Gishki Ritual Monster that shuffles up to 5 cards from the GYs into the Deck when Ritual Summoned.

Steelswarm Moth

HA05-EN048

Tribute Summoned with a Steelswarm, pay 1000 LP to return up to 2 of your opponent's cards to the hand.

Cards worth knowing

Two more cards from the set.

Caam, Serenity of Gusto

HA05-EN041

Once per turn, shuffle 2 Gusto monsters from your GY into the Deck to draw a card.

Vylon Epsilon

HA05-EN025

A Vylon Synchro that sends an equipped card to the GY to destroy an opponent's monster.

The chase card: Gem-Armadillo

Gem-Armadillo

HA05-EN005

Rarity Secret Rare

Set code HA05-EN005

1st Edition market price, October 23, 2026 $4.23

The 1st Edition Secret Rare Gem-Armadillo (HA05-EN005) was the set's most valuable card on October 23, 2026, at $4.23. The 1st Edition Secret Rare Caam, Serenity of Gusto was next at $2.73.

It is a Level 4 EARTH Rock with 1700 ATK. When it is Normal Summoned you can add a Gem-Knight monster from your Deck to your 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

Hidden Arsenal 5 has no expensive cards. On October 23, 2026 only Gem-Armadillo was above $3 in 1st Edition.

These are TCGplayer's 1st Edition 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 5: Steelswarm Invasion card list

Every set code in Hidden Arsenal 5: Steelswarm Invasion, in set code order, with each rarity it is printed at: 60 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 5: Steelswarm Invasion card is on the Forbidden & Limited List as of October 23, 2026, so a deck can run three copies of any of them.

The Gem-Knight Fusions here must be Fusion Summoned with their named materials, and the set holds both the Normal Monster Gem-Knights and the Fusions they make.

Deck building rules and the Forbidden & Limited List →

Frequently Asked Questions