Yu-Gi-Oh Hidden Arsenal 6 Card Ratings Text Spoiler

← Back to Yu-Gi-Oh Card Ratings		Return to Index		Forward to HA07-EN Ratings →
Learn to play the TCG.		More on these ratings		HA07-EN Card Spoiler
0/5	1/5	2/5	3/5	4/5	5/5

Hidden Arsenal 6: Omega Xyz (HA06-EN) Card Ratings

1. Product name was shortened for consistancy with the first 3 Hidden Arsenal sets.
2. Card gallery:
https://yugipedia.com/wiki/Set_Card_Galleries:Hidden_Arsenal_6:_Omega_Xyz_(TCG-EN-1E)

Hidden Arsenal 6 (HA06-EN060)
Whirlwind of Gusto
TRAP / Normal Trap
If you control no monsters: Target 2 "Gusto" monsters in your Graveyard; shuffle both targets into the Deck, then Special Summon 1 "Gusto" monster with 1000 or less DEF from your Deck.
(Super Rare)

Rating: 1 out of 5
Gusto Decks get their own worse Pot of Avarice. (#37)

Hidden Arsenal 6 (HA06-EN059)
Aquamirror Illusion
TRAP / Normal Trap
Special Summon 1 "Gishki" Ritual Monster from your hand. It cannot attack, and is returned to the hand during the End Phase.
(Super Rare)

Rating: 1 out of 5
Literally a remade Ritual Foregone (#39) without the cost.

Hidden Arsenal 6 (HA06-EN058)
Dustflame Blast
TRAP / Normal Trap
Banish all "Laval" monsters from your Graveyard; destroy any number of cards on the field, up to the number of monsters banished for this card's activation.
(Super Rare)

Rating: 0 out of 5
Many of them (#23) require other Lavals to be in your Grave and this takes them away.

Hidden Arsenal 6 (HA06-EN057)
Vylon Segment
SPELL / Equip Spell
Equip only to a "Vylon" monster. It cannot be targeted by the opponent's monster effects or Trap effects. If this face-up card on the field is sent to the Graveyard: You can add 1 "Vylon" Spell Card from your Deck to your hand.
(Super Rare)

Rating: 2 out of 5
Actually not bad for even the weaker members, and can get other copies of itself.

Hidden Arsenal 6 (HA06-EN056)
Vylon Polytope
SPELL / Quick-Play Spell
Target any number of "Vylon" Monster Cards you control that are Equip Cards; Special Summon them in face-up Defense Position. Banish them when they leave the field.
(Super Rare)

Rating: 2 out of 5
You might need them as Monster Cards, but this'll cost you them later.

Hidden Arsenal 6 (HA06-EN055)
Particle Fusion
SPELL / Normal Spell
Send, from your side of the field to the Graveyard, the Fusion Material Monsters that are listed on a "Gem-Knight" Fusion Monster Card, then Special Summon that Fusion Monster from your Extra Deck. (This Special Summon is treated as a Fusion Summon.) When you do: Banish this card from the Graveyard to target 1 "Gem-Knight" Fusion Material Monster used for the Fusion Summon; the Fusion Summoned monster gains that monster's ATK until the End Phase.
(Super Rare)

Rating: 1 out of 5
The Fusions (#21) are quite bad so no amount of these will help.

Hidden Arsenal 6 (HA06-EN054)
Daigusto Phoenix
WIND / Xyz Monster / Rank 2 / ATK 1500 / DEF 1100
(Pyro / Xyz / Effect)
2 Level 2 monsters
Once per turn: You can detach 1 Xyz Material from this card to target 1 face-up WIND monster you control; this turn, it can attack twice during each Battle Phase.
(Secret Rare)

Rating: 1 out of 5
Already available as Blade Armor Ninja (#41), which is nearly twice as strong.

Hidden Arsenal 6 (HA06-EN053)
Evigishki Merrowgeist
WATER / Xyz Monster / Rank 4 / ATK 2100 / DEF 1600
(Aqua / Xyz / Effect)
2 Level 4 monsters
After damage calculation, if this card destroys an opponent's monster by battle: You can detach 1 Xyz Material from this card; shuffle the destroyed monster into the Deck instead of sending it to the Graveyard.
(Secret Rare)

Rating: 1 out of 5
All this does is help the opponent out.

Hidden Arsenal 6 (HA06-EN052)
Vylon Disigma
LIGHT / Xyz Monster / Rank 4 / ATK 2500 / DEF 2100
(Fairy / Xyz / Effect)
3 Level 4 monsters
Once per turn: You can detach 1 Xyz Material from this card to target 1 face-up Attack Position Effect Monster your opponent controls; equip that target to this card. At the start of the Damage Step, if this card battles a monster whose Attribute is the same as a card equipped by this effect: Destroy that monster.
(Secret Rare)

Rating: 4 out of 5
Stats of Dark Magician put to very effective use. Relinquished (#1) on steroids.

Hidden Arsenal 6 (HA06-EN051)
Lavalval Ignis
FIRE / Xyz Monster / Rank 3 / ATK 1800 / DEF 1400
(Warrior / Xyz / Effect)
2 Level 3 monsters
If this card attacks or is attacked, during the Damage Step (in either player's turn): You can detach 1 Xyz Material from this card once per battle; this card gains 500 ATK until the End Phase.
(Secret Rare)

Rating: 1 out of 5
Bad enough to make cards like Black Pendant (YSD #21) look good.

Hidden Arsenal 6 (HA06-EN050)
Gem-Knight Pearl
EARTH / Xyz Monster / Rank 4 / ATK 2600 / DEF 1900
(Rock / Xyz)
2 Level 4 monsters
(Secret Rare)

Rating: 2 out of 5
Puts most Xyz Monsters with effects to shame, but isn't really good enough to beat the good ones. (#51)

Hidden Arsenal 6 (HA06-EN049)
Daigusto Falcos
WIND / Synchro Monster / Level 4 / ATK 1400 / DEF 1200
(Psychic / Synchro / Effect)
1 Tuner + 1 or more non-Tuner "Gusto" monsters
When this card is Synchro Summoned: All "Gusto" monsters currently on the field gain 600 ATK.
(Secret Rare)

Rating: 1 out of 5
It's only Secret Rare because of the set's nature. It'd be a Common otherwise.

Hidden Arsenal 6 (HA06-EN048)
Lavalval Dragun
FIRE / Synchro Monster / Level 6 / ATK 2500 / DEF 1200
(Dragon / Synchro / Effect)
1 Tuner + 1 or more non-Tuner FIRE monsters
Once per turn: You can add 1 "Laval" monster from your Deck to your hand, then send 1 "Laval" monster from your hand to the Graveyard.
(Secret Rare)

Rating: 1 out of 5
Lavals (#7) need to be relit each Turn Phase just to stay alive.

Hidden Arsenal 6 (HA06-EN047)
Gem-Knight Amethyst
EARTH / Fusion Monster / Level 7 / ATK 1950 / DEF 2450
(Aqua / Fusion / Effect)
1 "Gem-Knight" monster + 1 Aqua-Type monster
Must first be Fusion Summoned. When this card is sent from the field to the Graveyard: Return all Set Spell and Trap Cards on the field to the hand.
(Secret Rare)

Rating: 1 out of 5
So was Giant Trunade (#32) banned to make an even worse variant?

Hidden Arsenal 6 (HA06-EN046)
Evigishki Gustkraken
WATER / Ritual Monster / Level 6 / ATK 2400 / DEF 1000
(Aqua / Ritual / Effect)
You can Ritual Summon this card with any "Gishki" Ritual Spell Card. When this card is Ritual Summoned: Look at up to 2 random cards in your opponent's hand, then shuffle 1 of them into the Deck.
(Secret Rare)

Rating: 1 out of 5
Gusts were clocked at 5 MPH at a nearby anemometer.

Hidden Arsenal 6 (HA06-EN045)
Musto, Oracle of Gusto
WIND / Effect Monster / Level 4 / ATK 1800 / DEF 900
(Psychic / Effect)
Once per turn: You can target 1 "Gusto" monster in your Graveyard and 1 face-up monster on the field; shuffle the first target into the Deck, and if you do, negate the second target's effects until the End Phase.
(Super Rare)

Rating: 3 out of 5
Actually has sufficient gusto to take something out in battle.

Hidden Arsenal 6 (HA06-EN044)
Kamui, Hope of Gusto
WIND / Effect Monster / Level 2 / ATK 200 / DEF 1000
(Psychic / Flip / Effect)
FLIP: Special Summon 1 "Gusto" Tuner monster from your Deck.
(Super Rare)

Rating: 1 out of 5
You've got very little hope of this or the new Tuner surviving for any meaningful plays next turn.

Hidden Arsenal 6 (HA06-EN043)
Gusto Falco
WIND / Effect Monster / Level 2 / ATK 600 / DEF 1400
(Winged Beast / Tuner / Effect)
When this face-up card on the field is sent to the Graveyard, except by battle: You can Special Summon 1 "Gusto" monster from your Deck in face-down Defense Position.
(Super Rare)

Rating: 2 out of 5
As a Tuner that lacks really poor effects and high stats, it gets a 2.

Hidden Arsenal 6 (HA06-EN042)
Gishki Mollusk
WATER / Effect Monster / Level 4 / ATK 1700 / DEF 900
(Aqua / Effect)
When this card is sent to the Graveyard by a card effect: Look at the top 3 cards of your Deck, then return them all to the top or to the bottom of the Deck, in any order.
(Super Rare)

Rating: 1 out of 5
Pigeonholing Books of Spell (#93) does this much quicker.

Hidden Arsenal 6 (HA06-EN041)
Gishki Emilia
WATER / Effect Monster / Level 4 / ATK 1600 / DEF 800
(Spellcaster / Spirit / Effect)
Cannot be Special Summoned. During the End Phase of the turn this card is Normal Summoned or flipped face-up: Return it to the hand. When this card is Normal Summoned or flipped face-up: Negate all Trap Card effects on the field, until the End Phase. You must control another face-up "Gishki" monster to activate and to resolve this effect.
(Super Rare)

Rating: 1 out of 5
Emilia eliminated herself by being a Spirit (#217) monster.

Hidden Arsenal 6 (HA06-EN040)
Gishki Vision
WATER / Effect Monster / Level 2 / ATK 700 / DEF 500
(Sea Serpent / Effect)
If you Ritual Summon a WATER Ritual Monster, this card can be used as the entire Tribute. You can discard this card; add 1 "Gishki" Ritual Monster from your Deck to your hand.
(Super Rare)

Rating: 2 out of 5
Searchable and a 2nd WATER variant of Ritual Raven (#35), but there are far less WATER Rituals.

Hidden Arsenal 6 (HA06-EN039)
Vylon Stigma
LIGHT / Effect Monster / Level 4 / ATK 1600 / DEF 1000
(Fairy / Effect)
Once per turn, during either player's turn: You can target 1 face-up "Vylon" Equip Card you control and 1 appropriate face-up monster; equip the first target to the second target.
(Super Rare)

Rating: 2 out of 5
Unlikely to be all that useful, but can be with the stronger ones.

Hidden Arsenal 6 (HA06-EN038)
Vylon Tesseract
LIGHT / Effect Monster / Level 4 / ATK 800 / DEF 600
(Machine / Union / Effect)
Once per turn, you can either: Target 1 face-up "Vylon" monster you control; equip this card to that target, OR: Unequip this card and Special Summon it in face-up Attack Position. While equipped by this effect, if the equipped monster destroys an opponent's monster by battle: You can target 1 Level 4 or lower "Vylon" monster in your Graveyard; Special Summon that target. (A monster can only be equipped with 1 Union Monster at a time. If the equipped monster would be destroyed, destroy this card instead.)
(Super Rare)

Rating: 1 out of 5
No ATK boost is given so it's unlikely to make much of a difference.

Hidden Arsenal 6 (HA06-EN037)
Vylon Pentachloro
LIGHT / Effect Monster / Level 4 / ATK 500 / DEF 400
(Machine / Union / Effect)
Once per turn, you can either: Target 1 face-up "Vylon" monster you control; equip this card to that target, OR: Unequip this card and Special Summon it in face-up Attack Position. While equipped by this effect, if the equipped monster destroys an opponent's monster by battle: You can target 1 card your opponent controls; destroy that target. (A monster can only be equipped with 1 Union Monster at a time. If the equipped monster would be destroyed, destroy this card instead.)
(Super Rare)

Rating: 1 out of 5
We're sinking lower than the early Unions (#6).

Hidden Arsenal 6 (HA06-EN036)
Laval Blaster
FIRE / Effect Monster / Level 4 / ATK 1200 / DEF 800
(Warrior / Effect)
When this card is Normal Summoned, if you have a "Laval" monster in your Graveyard other than "Laval Blaster": You can choose a number from 1 to 5, then send that many cards from the top of your Deck to the Graveyard; this card gains 200 ATK for each "Laval" monster sent to the Graveyard to activate this effect.
(Super Rare)

Rating: 1 out of 5
You'd have to choose 5 to have any hopes of getting the highest boost, but it's hardly likely.

Hidden Arsenal 6 (HA06-EN035)
Laval Cotal
FIRE / Effect Monster / Level 2 / ATK 1300 / DEF 700
(Pyro / Tuner / Effect)
If you have 3 or more "Laval" monsters with different names in your Graveyard, you can Special Summon this card (from your hand).
(Super Rare)

Rating: 2 out of 5
New Laval Tuners have arrived, but they had very little.

Hidden Arsenal 6 (HA06-EN034)
Laval Lakeside Lady
FIRE / Effect Monster / Level 3 / ATK 200 / DEF 200
(Pyro / Tuner / Effect)
If this card is in your Graveyard and you have 3 or more "Laval" monsters with different names in your Graveyard: You can banish this card and 1 other "Laval" monster from your Graveyard to target 1 Set card your opponent controls; destroy that target.
(Secret Rare)

Rating: 2 out of 5
They like the number 3, but that reduces their uses to 1/12.

Hidden Arsenal 6 (HA06-EN033)
Gem-Knight Amber
EARTH / Effect Monster / Level 4 / ATK 1600 / DEF 1400
(Thunder / Gemini / Effect)
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● Once per turn: You can send 1 "Gem-Knight" card from your hand to the Graveyard to target 1 of your banished monsters; add that target to your hand.
(Super Rare)

Rating: 1 out of 5
D.D.R. (SDDE #18) can get any banished monster you own back on your field for a smaller fee.

Hidden Arsenal 6 (HA06-EN032)
Gem-Knight Iolite
EARTH / Effect Monster / Level 4 / ATK 1300 / DEF 2000
(Aqua / Gemini / Effect)
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● Once per turn: You can banish 1 "Gem-" monster from your Graveyard to target 1 "Gem-Knight" card in your Graveyard; add that target to your hand.
(Super Rare)

Rating: 2 out of 5
At least you can Set it and use its high DEF.

Hidden Arsenal 6 (HA06-EN031)
Gem-Knight Obsidian
EARTH / Effect Monster / Level 3 / ATK 1500 / DEF 1200
(Rock / Effect)
This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● Once per turn: You can banish 1 "Gem-" monster from your Graveyard to target 1 "Gem-Knight" card in your Graveyard; add that target to your hand.
(Super Rare)

Rating: 3 out of 5
Useful, even in a Beatdown Deck despite being a bit limited.

Hidden Arsenal 6 (HA06-EN030)
Infestation Tool
TRAP / Normal Trap
Send 1 "Steelswarm" monster from your Deck to the Graveyard to target 1 face-up "Steelswarm" monster you control; it gains 800 ATK until the End Phase.
(Super Rare)

Rating: 1 out of 5
Axe of Despair (#35) is a much better tool for any monster.

Hidden Arsenal 6 (HA06-EN029)
Infestation Ripples
TRAP / Normal Trap
Pay 500 Life Points to target 1 Level 4 or lower "Steelswarm" monster in your Graveyard; Special Summon it from the Graveyard.
(Super Rare)

Rating: 1 out of 5
That's about the limits of the entire infestation. About as impactful as a pebble in a pond.

Hidden Arsenal 6 (HA06-EN028)
Pyroxene Fusion
TRAP / Normal Trap
Send, from your hand or your side of the field to the Graveyard, the Fusion Material Monsters that are listed on a "Gem-Knight" Fusion Monster Card, then Special Summon that Fusion Monster from your Extra Deck. (This Special Summon is treated as a Fusion Summon.)
(Super Rare)

Rating: 1 out of 5
A more specific Trap Card version of regular Poly (#14). Hard pass.

Hidden Arsenal 6 (HA06-EN027)
Forbidden Arts of the Gishki
SPELL / Ritual Spell
This card can be used to Ritual Summon any "Gishki" Ritual Monster. You must also Tribute face-up monsters from anywhere on the field, whose total Levels equal the Level of the Ritual Monster you Ritual Summon. Halve the ATK of the monster Ritual Summoned by this effect. You cannot conduct your Battle Phase the turn you activate this card.
(Super Rare)

Rating: 0 out of 5
They don't want it to be OP, but limiting this to Gishki Rituals automatically does that.

Hidden Arsenal 6 (HA06-EN026)
Vylon Element
SPELL / Continuous Spell
When any face-up "Vylon" Equip Card(s) you control are destroyed (except during the Damage Step): You can Special Summon an equal or lower number of "Vylon" Tuner monsters from your Deck. They cannot be used as Synchro Material Monsters, except for the Synchro Summon of a "Vylon" Synchro Monster.
(Super Rare)

Rating: 2 out of 5
You won't be able to do much (#42) with multiple Tuners, but I suppose they're okay for defending.

Hidden Arsenal 6 (HA06-EN025)
Vylon Component
SPELL / Equip Spell
Equip only to a "Vylon" monster. If it attacks a Defense Position monster, inflict piercing Battle Damage to your opponent. If this face-up card on the field is sent to the Graveyard: You can add 1 "Vylon" Spell Card from your Deck to your hand.
(Super Rare)

Rating: 2 out of 5
The original can work just as well, but this can get other copies.

Hidden Arsenal 6 (HA06-EN024)
Daigusto Sphreez
WIND / Synchro Monster / Level 6 / ATK 2000 / DEF 1300
(Psychic / Synchro / Effect)
1 Tuner + 1 or more non-Tuner "Gusto" monsters
When this card is Synchro Summoned: You can target 1 "Gusto" card in your Graveyard; add that target to your hand. Your opponent takes any Battle Damage you would have taken from battles involving a face-up "Gusto" monster you control. This card cannot be destroyed by battle.
(Secret Rare)

Rating: 1 out of 5
Yubel (#6) does these same things for much less work.

Hidden Arsenal 6 (HA06-EN023)
Vylon Omega
LIGHT / Synchro Monster / Level 10 / ATK 3200 / DEF 1900
(Fairy / Synchro / Effect)
2 Tuners + 1 non-Tuner "Vylon" monster
When this card is Synchro Summoned: Destroy all face-up monsters that were Normal Summoned/Set. Once per turn: You can target 1 "Vylon" monster in your Graveyard; equip that target to this card. During either player's turn, when a monster effect activates: You can send 1 Equip Card equipped to this card to the Graveyard; negate the activation, and if you do, destroy that monster.
(Secret Rare)

Rating: 2 out of 5
Two possibly potent effects, but quite the let down for such high ATK.

Hidden Arsenal 6 (HA06-EN022)
Vylon Alpha
LIGHT / Synchro Monster / Level 9 / ATK 2200 / DEF 1100
(Machine / Synchro / Effect)
1 "Vylon" Tuner + 1 or more non-Tuner monsters
When this card is Synchro Summoned: You can target 1 Equip Spell Card in your Graveyard; equip that target to this card. While this card is equipped with an Equip Card, it cannot be destroyed by Spell/Trap effects, except for Equip Cards.
(Secret Rare)

Rating: 2 out of 5
Shouldn't be difficult to bring out or use its built-in protection. Not very strong for its Level though.

Hidden Arsenal 6 (HA06-EN021)
Laval Stennon
FIRE / Synchro Monster / Level 7 / ATK 2700 / DEF 1800
(Pyro / Synchro / Effect)
1 Tuner + 1 or more non-Tuner FIRE monsters
When this card is Synchro Summoned: Send 1 card from your hand to the Graveyard. During either player's turn, when this card is targeted by a card effect: You can banish 1 "Laval" monster from your Graveyard; negate the activation, and if you do, destroy the targeting card.
(Secret Rare)

Rating: 1 out of 5
Reduces your options right from the start.

Hidden Arsenal 6 (HA06-EN020)
Gem-Knight Prismaura
EARTH / Fusion Monster / Level 7 / ATK 2450 / DEF 1400
(Thunder / Fusion / Effect)
1 "Gem-Knight" monster + 1 Thunder-Type monster
Must first be Fusion Summoned. Once per turn: You can send 1 "Gem-Knight" card from your hand to the Graveyard to target 1 face-up card on the field; destroy that target.
(Secret Rare)

Rating: 1 out of 5
Thunder Giant (#11) got turned to a $5 gem stone.

Hidden Arsenal 6 (HA06-EN019)
Gem-Knight Citrine
EARTH / Fusion Monster / Level 7 / ATK 2200 / DEF 1950
(Pyro / Fusion / Effect)
1 "Gem-Knight" monster + 1 Pyro-Type monster
Must first be Fusion Summoned. If this card attacks or is attacked, your opponent cannot activate cards or effects until the end of the Damage Step.
(Secret Rare)

Rating: 2 out of 5
The effect will help, but the stats aren't great.

Hidden Arsenal 6 (HA06-EN018)
Evigishki Tetrogre
WATER / Ritual Monster / Level 6 / ATK 2600 / DEF 2100
(Aqua / Ritual / Effect)
You can Ritual Summon this card with any "Gishki" Ritual Spell Card. Once per turn: You can declare 1 card type (Monster, Spell, or Trap); your opponent can discard 1 card to negate this card's effect, otherwise both players send 1 card of the declared type from their Main Deck to the Graveyard.
(Secret Rare)

Rating: 1 out of 5
Its only effect is a virtually free way for the opponent to block it, and isn't even good otherwise.

Hidden Arsenal 6 (HA06-EN017)
Steelswarm Hercules
DARK / Effect Monster / Level 10 / ATK 3200 / DEF 0
(Fiend / Effect)
Cannot be Special Summoned. Requires 3 "Steelswarm" Tributes to Normal Summon (cannot be Normal Set). Once per turn: You can pay half your Life Points; destroy all other cards on the field.
(Secret Rare)

Rating: 1 out of 5
As strong as this is, it requires too much for an already steep effect activation cost.

Hidden Arsenal 6 (HA06-EN016)
Steelswarm Longhorn
DARK / Effect Monster / Level 9 / ATK 3000 / DEF 0
(Fiend / Effect)
Once per turn, if this card was Tribute Summoned by Tributing a "Steelswarm"
monster(s): You can pay 1000 Life Points to target 1 monster on the field; destroy that target.
(Secret Rare)

Rating: 1 out of 5
Any DEF at all would've made this good, but it lacks even 1 point.

Hidden Arsenal 6 (HA06-EN015)
Steelswarm Sting
DARK / Effect Monster / Level 4 / ATK 1850 / DEF 0
(Fiend / Effect)
When this card you control is sent to your Graveyard: Target 1 face-up Ritual, Fusion or Synchro Monster on the field; destroy that target.
(Super Rare)

Rating: 2 out of 5
Sadly, it's the best they've gotten so far.

Hidden Arsenal 6 (HA06-EN014)
Steelswarm Sentinel
DARK / Effect Monster / Level 3 / ATK 1100 / DEF 0
(Fiend / Effect)
While this card is in face-up Attack Position, Special Summoned Level 5 or higher monsters on the field cannot activate their effects.
(Super Rare)

Rating: 1 out of 5
Effects won't be necessary to take this down.

Hidden Arsenal 6 (HA06-EN013)
Steelswarm Genome
DARK / Effect Monster / Level 2 / ATK 1000 / DEF 0
(Fiend / Effect)
This card can be treated as 2 Tributes for the Tribute Summon of a "Steelswarm" monster.
(Super Rare)

Rating: 1 out of 5
Double Coston (#14) does better for any DARK monster.

Hidden Arsenal 6 (HA06-EN012)
Reeze, Whirlwind of Gusto
WIND / Effect Monster / Level 5 / ATK 1900 / DEF 1400
(Psychic / Effect)
Once per turn: You can return 1 card from your hand to the bottom of the Deck to target 1 monster your opponent controls and 1 face-up "Gusto" monster you control; switch control of both monsters.
(Super Rare)

Rating: 1 out of 5
Why would I want a less versatile and non-free version of Creature Swap? (#18)

Hidden Arsenal 6 (HA06-EN011)
Gusto Squirro
WIND / Effect Monster / Level 2 / ATK 0 / DEF 1800
(Thunder / Tuner / Effect)
When this card is destroyed by a card effect and sent to the Graveyard: You can Special Summon 1 Level 5 or higher "Gusto" monster from your Deck.
(Super Rare)

Rating: 2 out of 5
Useful on its own at least, though marginally so.

Hidden Arsenal 6 (HA06-EN010)
Gishki Noellia
WATER / Effect Monster / Level 4 / ATK 1700 / DEF 1000
(Spellcaster / Effect)
When this card is Normal Summoned: You can reveal the top 5 cards of your Deck, send any revealed Ritual Spell Cards or "Gishki" Monster Cards to the Graveyard, then return the other cards to the bottom of your Deck in any order.
(Super Rare)

Rating: 1 out of 5
You really don't need anything they offer.

Hidden Arsenal 6 (HA06-EN009)
Gishki Reliever
WATER / Effect Monster / Level 2 / ATK 500 / DEF 800
(Aqua / Effect)
When this card is Normal or Flip Summoned: You can target 1 other monster you control; return that target to the hand. You must control another face-up "Gishki" monster to activate and to resolve this effect.
(Super Rare)

Rating: 1 out of 5
Brionac (#22) exists.

Hidden Arsenal 6 (HA06-EN008)
Vylon Hept
LIGHT / Effect Monster / Level 4 / ATK 1800 / DEF 800
(Fairy / Effect)
Once per turn: You can target 1 "Vylon" Monster Card you control that is an Equip Card; Special Summon that target in face-up Defense Position. Banish it when it leaves the field.
(Super Rare)

Rating: 3 out of 5
Leave them equipped and let this card use the brute force.

Hidden Arsenal 6 (HA06-EN007)
Vylon Prism
LIGHT / Effect Monster / Level 4 / ATK 1500 / DEF 1500
(Thunder / Tuner / Effect)
If this card is sent from the Monster Card Zone to the Graveyard: You can pay 500 Life Points to target 1 face-up monster you control; equip this card to that target. If the equipped monster attacks or is attacked: It gains 1000 ATK during the Damage Step only.
(Super Rare)

Rating: 3 out of 5
Finally something in the Union department that is also a Tuner. Searchable too.

Hidden Arsenal 6 (HA06-EN006)
Vylon Stella
LIGHT / Effect Monster / Level 3 / ATK 1400 / DEF 200
(Fairy / Tuner / Effect)
If this card is sent from the Monster Card Zone to the Graveyard: You can pay 500 Life Points to target 1 face-up monster you control; equip this card to that target. At the end of the Damage Step, if the equipped monster battled an opponent's monster: Destroy that opponent's monster.
(Super Rare)

Rating: 2 out of 5
Catastor (#26) would be a better choice effect-wise, but this is also a searchable Tuner.

Hidden Arsenal 6 (HA06-EN005)
Vylon Tetra
LIGHT / Effect Monster / Level 2 / ATK 900 / DEF 900
(Machine / Tuner / Effect)
If this card is sent from the Monster Card Zone to the Graveyard: You can pay 500 Life Points to target 1 face-up monster you control; equip this card to that target. If the equipped monster would be destroyed, you can destroy this Equip Card instead.
(Super Rare)

Rating: 2 out of 5
They seem to mostly be copying Union monsters, but with a small fee attached.

Hidden Arsenal 6 (HA06-EN004)
Vylon Sphere
LIGHT / Effect Monster / Level 1 / ATK 400 / DEF 400
(Machine / Tuner / Effect)
If this card is sent from the Monster Card Zone to the Graveyard: You can pay 500 Life Points to target 1 face-up monster you control; equip this card to that target. You can send this Equip Card to the Graveyard to target 1 Equip Spell Card in your Graveyard; equip that target to the monster this card was equipped to.
(Super Rare)

Rating: 2 out of 5
Somewhat helpful, especially with the last effect.

Hidden Arsenal 6 (HA06-EN003)
Laval Cannon
FIRE / Effect Monster / Level 4 / ATK 1600 / DEF 900
(Warrior / Effect)
When this card is Normal or Flip Summoned: You can target 1 of your banished "Laval" monsters; Special Summon that target.
(Secret Rare)

Rating: 1 out of 5
Actually relies on Lavals abandoning their main strategy.

Hidden Arsenal 6 (HA06-EN002)
Laval Volcano Handimaiden
FIRE / Effect Monster / Level 1 / ATK 100 / DEF 200
(Pyro / Tuner / Effect)
When this card is sent to the Graveyard, if you have a "Laval" monster in your Graveyard other than "Laval Volcano Handmaiden": You can send 1 "Laval" monster from your Deck to your Graveyard.
(Super Rare)

Rating: 2 out of 5
Handy only as a searchable Tuner.

Hidden Arsenal 6 (HA06-EN001)
Gem-Knight Crystal
EARTH / Normal Monster / Level 7 / ATK 2450 / DEF 1950
(Rock / Normal)
A Gem-Knight officer of high rank, who has optimized the use of the crystal powers. Despite his ability to overwhelm most opponents, he's wary of stretching himself too thin, and opts for solidarity with his comrades.
(Super Rare)

Rating: 1 out of 5
Don't bother asking any expert on this. It's worth about $0.50.