Hidden Arsenal 7: Knight of Stars Card List and Set Guide

Overview

Hidden Arsenal 7: Knight of Stars is a 70-card set released April 26, 2013, with codes HA07-EN001 to HA07-EN070. Every card first appeared in Duel Terminal 7a or 7b, according to the catalog.

It is the biggest Hidden Arsenal so far, 46 Super Rares and 24 Secret Rares, built around two groups: twenty Constellar cards, LIGHT monsters that adjust their Levels and make Rank 4 to 6 Xyz, and seventeen lswarm cards, the Steelswarm and Evilswarm Xyz with their Infestation Spells and Traps. Gem-Knight, Gishki, Laval and Gusto support fills the rest.

It has twelve Xyz Monsters, and four of its cards are on the Forbidden & Limited List, two of them Forbidden. Prices are low: on October 23, 2026 no printing was above $13 in 1st Edition.

Cards and rarities

Hidden Arsenal 7: Knight of Stars has 70 set codes, each starting HA07-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 70 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 →

Constellars and Evilswarm

The set's two main archetypes.

Constellar Ptolemy M7

HA07-EN062

A Rank 6 Constellar Xyz that can also be Summoned on top of another Constellar Xyz.

Constellar Pleiades

HA07-EN022

A Rank 5 Constellar Xyz that detaches a material to return a card on the field to the hand, in either player's turn.

Constellar Kaus

HA07-EN045

Up to twice per turn, raise or lower a Constellar monster's Level by 1.

Evilswarm Ophion

HA07-EN064

A Rank 4 Evilswarm Xyz. While it has material, no one can Special Summon Level 5 or higher monsters, and it searches an Infestation card.

Infestation Pandemic

HA07-EN068

A Quick-Play Spell: your face-up lswarm monsters are unaffected by other Spells and Traps this turn.

Cards worth knowing

Two more cards from the set. Lavalval Chain and Evilswarm Ouroboros are Forbidden, and Daigusto Emeral and Gem-Knight Master Diamond are Limited.

Lavalval Chain

HA07-EN019

A Rank 4 Xyz that detaches a material to send a card from your Deck to the GY or put a monster from your Deck on top. It is Forbidden.

Sophia, Goddess of Rebirth

HA07-EN055

Special Summoned by banishing a face-up Ritual, Fusion, Synchro and Xyz Monster from the field, with 3600 ATK.

The chase card: Constellar Ptolemy M7

Constellar Ptolemy M7

HA07-EN062

Rarity Secret Rare

Set code HA07-EN062

1st Edition market price, October 23, 2026 $12.68

The 1st Edition Secret Rare Constellar Ptolemy M7 (HA07-EN062) was the set's most valuable card on October 23, 2026, at $12.68. The 1st Edition Secret Rare Evilswarm Ophion was next at $9.24.

It is a Rank 6 LIGHT Machine Xyz Monster for 2 Level 6 monsters. You can also Xyz Summon it by using another Constellar Xyz Monster you control as its material, keeping that monster's materials.

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 7's prices are low. On October 23, 2026 Constellar Ptolemy M7 led, and only the top two printings were above $7.

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 7: Knight of Stars card list

Every set code in Hidden Arsenal 7: Knight of Stars, in set code order, with each rarity it is printed at: 70 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

4 cards from Hidden Arsenal 7: Knight of Stars are on the Forbidden & Limited List as of October 23, 2026: Evilswarm Ouroboros and Lavalval Chain are Forbidden; Daigusto Emeral and Gem-Knight Master Diamond are Limited. A Forbidden card cannot be played at all and a Limited card at one copy per deck; the rest of the set can be run at three.

The Constellars change their Levels with Constellar Kaus, so the same monsters can make Rank 4, 5 or 6 Xyz depending on what the game needs.

Deck building rules and the Forbidden & Limited List →

Frequently Asked Questions