Rider Cards

Like the Heisei Riders in Kamen Rider Ryuki and Kamen Rider Blade, Decade has card-based weaponry and powers: the Rider Cards (ライダーカード). However, due to a seal placed on them all, Tsukasa travels across the world to undo the seals and regain the abilities the cards endow. These cards match up with Bandai and Carddas's arcade card game, Kamen Rider Battle: Ganbaride.

Like Decade, Diend possesses his own set of Rider Cards.

KaijinRide Cards
KaijinRide Cards (カイジンライドカード) allow Chinomanako Diend to summon Kaijin from previous Kamen Rider series. Given that Chinomanako had this set, it is possible that Kaito also had these in his possession.
 * Moose Fangire: Summons the Moose Fangire. Used once in the World of Shinkenger to fight Decade, Kuuga, and the Shinkengers.
 * Eagle Undead: Summon the Eagle Undead. Used once in the World of Shinkenger to fight Decade, Kuuga, and the Shinkengers.

These two cards were released as a bonus for preordering the Complete Selection Modification Decadriver alongside the KamenRide: Diend card and its corresponding Rider Card set, but using them will result in an error sound.

FormRide Cards
FormRide Cards (フォームライドカード) allow Decade to assume any of the forms the Heisei Riders have. Accessing these forms also grants Decade the use of any weapon exclusive to that form, such as the Storm Halber of Agito Storm or the Bassha Magnum of Kiva Basshaa. When using Kuuga's FormRide Cards, Decade gains Kuuga's ability to turn normal items or weapons into their respective weaponry.

Generally, Decade changes forms within one Rider's forms. However, Decade does not have to be a particular Rider to transform into one of that Rider's alternate forms.
 * Kuuga Dragon (クウガドラゴン): Decade assumes Kuuga's Dragon Form.
 * Kuuga Titan (クウガタイタン): Decade assumes Kuuga's Titan Form.
 * Kuuga Pegasus (クウガペガサス): Decade assumes Kuuga's Pegasus Form. Tsukasa does not suffer from the same sensory overload that was depicted in the original series.
 * Kiva Garulu (キバガルル): Decade assumes Kiva's Garulu Form. Unlike Kiva himself, who is left-handed in this form, Tsukasa prefers his right hand.
 * Kiva Basshaa (キバドッガ): Decade assumes Kiva's Basshaa Form.
 * Kiva Dogga (キババッシャー Kiba Basshā): Decade assumes Kiva's Dogga Form.
 * Agito Flame (アギトフレイム): Decade assumes Agito's Flame Form.
 * Agito Storm (アギトストーム): Decade assumes Agito's Storm Form.
 * Faiz Axel (ファイズアクセル): Decade assumes Faiz's Axel Form. While in the original series, this form moved at the speed of sound for only 10 seconds, Decade's version is not affected by a time limit and allows him to match the Worms and the ZECT Riders' Clock Up system, which moves at the speed of light.
 * Den-O Ax (デンオウアックス): Decade assumes Den-O's Ax Form.
 * Kabuto Masked (カブトマスクド): Decade transforms into Kamen Rider Kabuto Masked Form. This card is not used in the series, but in the S.I.C Hero Saga side story, Masked Rider Decade: World of Stronger where Decade uses this card to protect himself from Delza Army General Steel's steel shaft. Unlike the other FormRide Cards, this card transforms Decade into the default form of the Rider instead of a mid-upgraded form.
 * Den-O Rod (デンオウロッド): Decade transforms into Kamen Rider Den-O Rod Form. This card does not appear in the television series, but is featured in Hobby Japans Detail of Heroes book on Decade.
 * Den-O Gun (デンオウガン): Decade transforms into Kamen Rider Den-O Gun Form. This card does not appear in the television series, but is featured in Hobby Japans Detail of Heroes book on Decade.
 * Den-O Wing (デンオウウイング): Decade transforms into Kamen Rider Den-O Wing Form. This card does not appear in the television series, but is featured in Hobby Japans Detail of Heroes book on Decade.

AttackRide Cards
The AttackRide Cards (アタックライドカード) allow Decade or Diend to perform any of their own attacks.

Decade is also able to use any signature attacks of whatever Kamen Rider he has transformed into.

Decade=
 * Blast (バースト): As Decade, this grants the Ride Booker's Gun Mode rapid fire capabilities.
 * Slash (スラッシュ): As Decade, this increases the damage done by the Ride Booker's Sword Mode.
 * Illusion (イリュージョン): As Decade, this creates multiple images of Decade. Each image can come in physical contact with the target.
 * Invisible (インビジブル): As Decade, this card turns him invisible
 * Clock Up (クロックアップ): As Kabuto, or Decade Violent Emotion moves extremely fast to the point that seconds slow down into minutes. In the novel, the card somehow ended up in Tendou's possession and he gives it to Tsukasa after he realized that he is Decade with the card itself being used by Decade while in Kuuga Mighty Form.
 * When this attack is used in Kabuto form, Kabuto Zecter's voice will be played. But Decadriver's voice will be played insteads if Tsukasa stays in his Decade form.
 * Ongekibou Rekka (オンゲキボウ・レッカ): As Hibiki, Decade conjures up two drumsticks to charge them with power and use the finisher Kiboujutsu Rekkadan, igniting the tops with flames, creating torch-like weapons that shoot fireballs to incinerate targets. Decade's fireballs are powerful enough to destroy giant Makamou as well.
 * Onibi (オニビ): As Hibiki, Decade exhales a stream of hot flames through a mouth that forms from the mask.
 * Auto Vajin (オートバジン): As Faiz, Decade turns the Machine Decader into the Autovajin, Faiz's own motorcycle, which goes into Battle Mode. This also allows Decade to access the Faiz Edge via the Autovajin's right shoulder.
 * Strike Vent (ストライクベント): As Ryuki, Decade summons the Drag Claw, a dragon-headed gauntlet that can send a burst of flames out of its mouth. Unlike the original Ryuki, it does not need Dragreder's assistance.
 * Guard Vent: As Ryuki, Decade summons the Drag Shield, a dragon-like shield arrays on his arms. First used in Kamen Rider Battride War.
 * Metal (メタル): As Blade, Decade invokes the power of the Seven of Spades Rouse Card, Metal Trilobite, to enhance resilience to physical harm by transmutating his body into organic metal.
 * Mach (マッハ): As Blade, Decade invokes the power of the Nine of Spades Rouse Card, Mach Jaguar, to enhance his speed and agility.
 * Ore Sanjou! (オレサンジョウ！): As Den-O, Decade utters Sword Form's signature phrase and performs his signature pose.
 * Kotaewa Kiite Nai (コタエハキイテナイ): As Den-O, Decade transforms into Gun Form and utters his signature phrase and performs his signature pose.
 * Nakerude! (ナケルデ) & Bokuni Tsurarete Miru? (ボクニツラレテミル？): These two cards were briefly shown following Decade's use of the "Ore Sanjou!" and "Kotaewa Kiite Nai" cards. They were not used in the context of the TV series, but are assumed to have similar effects as the other two cards (i.e. As Den-O, Nakerude! transforms Decade into Ax Form and says his signature phrase while cracking his neck, while Bokuni Tsurarete Miru? transforms Decade into Rod Form and says his phrase while trying to "reel his enemies in").
 * Tsuppari (ツッパリ): As Den-O Ax Form, Decade launches a series of palm strikes.
 * Rekka Daizantou (レッカダイザントウ): As Decade Complete Form and wielding ShinkenRed's Rekka Daizantou, Decade performs the Many Fires Profusion attack.
 * GaGa no Udewa (ガガノウデワ): Arms Decade Complete Form with the GaGa Armlet after Diend steals it from Llumu Qhimil.
 * Televikun (テレビクン): A card appearing in the Hyper Battle Video that allows Decade, in Complete Form, and the riders he's summoned in their Final Forms to perform their respective Final Attacks.
 * Gigant (ギガント): Summon's Kamen Rider G4's Gigant to attack enemies.
 * Side Basshar (サイドバッシャー): Turns the Machine Decader into the Side Basshar, Kaixa's own motorcycle, in battle mode.
 * Utchari (ウッチャリ): As Den-O Ax Form, Decade performs a Sumo lifting attack. This card does not appear in the television series, but is featured in Hobby Japan's Detail of Heroes book on Decade.
 * Hyper Clock Up (ハイパークロックアップ): As Kabuto Hyper Form, Decade is able travel at near light speeds, allowing him to travel forward or backward through time. This card is not shown in the TV series, but is used in the S.I.C Hero Saga side story published in Hobby Japan magazine.
 * Advent (アドベント): As Ryuki, Decade summons the Contract Monster Dragreder. First used in Kamen Rider × Super Sentai: Super Hero Taisen.
 * Reflecloud: A special which allows the user to create a magical vortex that absorbs and reflects any beam attack. Given to Tsukasa by  to counter Kani Lazer's attack. The Gosei Card just happened to be compatible with Decade's Decadriver. First used in Kamen Rider × Super Sentai: Super Hero Taisen.

Final FormRide Cards
Final FormRide Cards (ファイナルフォームライドカード) gives Decade the power to bestow new forms upon other Riders by reaching into their back, telling them beforehand "It might tickle a bit". Only while the cards stay in effect, which is during the time Tsukasa is transformed into Decade, the transformed Heisei Rider can alternate between his new form and his original Rider form.

Diend also has his array of Final FormRide Cards. Whereas Decade activates the Heisei Riders' Final Forms by reaching his hands into their back, Diend activates them by shooting the Rider in the back, commenting beforehand "This will only hurt for a moment."

​In the OOO, Den-O, All Riders: Let's Go Kamen Riders' net movie, while playing poker and getting a "pig hand", Kamen Rider Decade uses Final FormRide Cards to transform his opponents—Garren into hishi mochi (菱餅), Chalice into a heart-shaped chocolate (チョコ), and General Shadow into a fishbowl (金魚鉢)—before taking all of their poker chips.
 * Kuuga Gouram (クウガゴウラム): Transforms Kuuga into a creature similar to Gouram, giving him the ability to fly.
 * In Kamen Rider × Kamen Rider Double & Decade: Movie War 2010, Kuuga gains a new, stronger Final FormRide form called the Ultimate Kuuga Gouram (アルティメットクウガゴウラム), which he assumed on his own while in Ultimate Form. Decade later gained the ability to have Yusuke assume this form in battle against the Super Crisis Fortress.
 * In the novel, Decade uses it on Godai, turning into an alternate Kuuga Gouram based on a rhinoceros beetle; normally this form would be based on a stag beetle, which is also the basis for Kuuga's general design.
 * In Kamen Rider Battle: Ganbaride, Decade uses the Kuuga Ball (クウガボール) card to change Kuuga into a dodgeball-like form to perform the Decade Dodge (ディケイドドッジ) attack.
 * Kiva Arrow (キバアロー): Transforms Kiva into a large Kivat-like bow with an arrow resembling Kiva's sealed Hell's Gate leg.
 * Ryuki Dragreder (リュウキドラグレッダー): Transforms Ryuki into Dragreder, Ryuki's Contract Monster.
 * Blade Blade (ブレイドブレード): Transforms Blade into a larger version of the Blay Rouzer.
 * Faiz Blaster (ファイズブラスター): Transforms Faiz into a large laser cannon, similar in appearance to Faiz's own Faiz Blaster weapon.
 * Agito Tornador (アギトトルネイダー): Transforms Agito into a hoverboard similar to the Machine Tornador Slider Mode.
 * Momotaros: Released in Final FormRide Series toy line as Den-O Momotaros (デンウーモモタロズ). Ejecting his host, Den-O Sword Form manifests into Momotaros. This was originally the DenLiner Card Diend had in his possession before Decade takes it from him, said to allow Den-O to become a copy of the DenLiner.
 * Zecter Kabuto (ゼクターカブト): Transforms Kabuto into a giant Kabuto Zecter, able to burrow underground.
 * Hibiki Ongekiko (ヒビキオンゲキコ): Transforms Hibiki into the Hibiki Akanetaka (ヒビキアカネタカ), a giant version of the Akanetaka Disk Animal.
 * Decade DecaDriver (ディケイドディケイドライバー): Transforms Decade into a larger version of the Decadriver which is worn by a Diend KamenRide Card-summoned Kamen Rider J to transform into Decade Complete Form Jumbo Formation (ディケイドコンプリートフォームジャンボフォーメーション). This complete form is identical in appearance to the regular, except he is in J's Jumbo size, and does not wear the K-Touch but the Decadriver on his belt buckle.
 * All Rider (オールライダー): Transforms all nine Heisei Kamen Riders into their Final FormRide forms. When it is used in Movie War 2010, only five of the Riders turn into their Final FormRide forms (Ultimate Kuuga Gouram, Ryuki Dragreder, Agito Tornador, Zecter Kabuto, Hibiki Akanetaka), while three others used their vehicles (The Castle Doran, Jet Sliger and the DenLiner) and the last uses an alternate form (Blade Jack Form).
 * Kamen Rider W: Splits Kamen Rider Double CycloneJoker into Kamen Rider Double CycloneCyclone (仮面ライダーＷ（ダブル）サイクロンサイクロン), controlled by Philip, and Kamen Rider Double JokerJoker (仮面ライダーＷ（ダブル）ジョーカージョーカー), controlled by Shotaro. Unlike the other Final FormRide forms, Double CycloneCyclone and Double JokerJoker do not require their corresponding Final AttackRide card to execute their finishing attack.
 * Strong Zecter (ストロングゼクター): Transforms Stronger into a giant beetle. This was used in the S.I.C Hero Saga side story Masked Rider Decade: World of Stronger.

Final AttackRide Cards
The Final AttackRide Cards (ファイナルアタックライドカード) are Decade and Diend's most powerful attacks, used for finishing off enemies.

Decade= The Final AttackRide Cards, if used in conjunction with the Final FormRides, can allow Decade to perform an attack with that Rider's FinalForm (which usually resemble that Rider's own signature attack in some way). If the Final AttackRide is used in conjunction with KamenRide Cards, they allow Decade to perform the signature attack of the Rider he is transformed into. If the Final AttackRide is used when Decade is in Complete Form, he can perform that Rider's signature move (in their ultimate form) alongside the summoned Rider using the Ride Booker to improvise if the attack uses a weapon.
 * Decade: Decade performs the Dimension Kick (ディメンションキック), Decade's Rider Kick. With the Ride Booker in Sword Mode, Decade can execute a highly charged slash called the Dimension Slash (ディメンションスラッシュ). While in Gun Mode, Decade can execute a highly charged shot called the Dimension Blast (ディメンションブラスト). All attacks involve the Decadriver generating large golden Final AttackRide cards, which Decade leaps/runs/shoots through, the final card having an image of Decade's attack before he bursts through it. These hologram cards can also stun the enemy before the attack connects and can line up to track the enemy. In the Ganbaride game, Decade has another final attack, Decade Vanish where he captures the enemy in energy barcode, scanning the target before finishing him off.
 * When used by Decade Complete Form, the Dimension Kick becomes the Enhanced Dimension Kick (強化ディメンションキック).
 * Alongside Double CycloneCyclone and Double JokerJoker, Decade executes a triple Rider Kick called the Triple Extreme (トリプルエクストリーム).
 * In All Riders vs. Dai-Shocker, a variation of this card is the Final KamenAttackFormRide Card (ファイナルカメンアタックフォームライドカード) which is used while Decade Complete Form Jumbo Formation is active. Decade performs the Final Dimension Kick (ファイナルディメンションキック), a variation of the Dimension Kick, transforming the Shōwa and Heisei Riders into KamenRide cards for Decade to travel through as opposed to Final AttackRide cards before hitting the target.
 * In Kamen Rider: Climax Heroes, Decade has another final attack, Decade Unlimited, Decade Complete Form's Rider Kick, in which instead of Final AttackRide card holograms, Decade locks the opponent in a dimension that depicts the nine original worlds and then the ten Heisei Rider symbols appear in the same fashion as the Final AttackRide cards as Decade hits the target with the Rider Kick.
 * Kuuga: While in Gouram form, Kuuga rushes toward Decade with the target stuck in his pincers while Decade performs the Mighty Kick-like Decade Assault (ディケイドアサルト) flying kick towards the target.
 * Kiva: With the Kiva Arrow, Decade performs the Decade Fang (ディケイドファング) which fires the arrow, unfolding to hit the target in similarly to Kiva's Darkness Moon Break kick.
 * In All Riders vs. Dai-Shocker, when Tsukasa "loans" the Kiva Arrow to Momotaros, the attack is called Momo Fang (モモファング), labeled by Momotaros as "Our Finishing Attack, Final Attack Version" (俺たちの必殺技・ファイナルアタックバージョン).
 * Ryuki: With Ryuki Dragreder flying behind to boost his attack's power, Decade performs the Decade Dragoon (ディケイドドラグーン) which is similar to Ryuki's Final Vent, the Dragon Rider Kick.
 * Blade: With the Blade Blade, Decade performs the Decade Edge (ディケイドエッジ) where the Blade Blade charges with electricity then is slashed down to make a huge electric shockwave similar to Blade's Lightning Slash. The same card can be used by Decade while as Blade, executing Blade's Lightning Blast kick.
 * Faiz: With the Faiz Blaster, Decade shoots an energy drill at the enemy before performing the Decade Photon (ディケイドフォトン), a powerful laser blast with some recoil, which is similar to Faiz's Crimson Smash kick.
 * Agito: On the Agito Tornador, Decade executes a slashing attack called the Decade Tornado (ディケイドトルネード) which is similar to Agito's Saber Brake Slash. The same card can be used by Decade while as Agito, executing Agito's Rider Kick.
 * Den-O: Momotaros executes the Decade Liner (ディケイドライナー) similar to Den-O's Extreme Slash, labeled by Momotaros as "My Finisher Attack, Decade Version" (俺の必殺技・ディケイドバージョン).
 * Kabuto: The Zecter Kabuto charges at the opponent in a devastating mid-air body slam, Decade Meteor (ディケイドメテオ). With the target left vulnerable in mid-air, Kabuto and Decade execute their respective kick attacks while in Clock Up. The same card can be used by Decade in Kabuto's Rider Form to execute Kabuto's Rider Kick.
 * Hibiki: With Hibiki Ongekiko, Decade performs the Decade Wave (ディケイドウェイブ), where Hibiki Akanetaka transforms into the Hibiki Ongekiko and attaches to the target and allows Decade to perform his version of an Ongeki Da finisher using Hibiki's Ongekibou Rekka.
 * Amazon (アマゾン): The GaGa Armlet is transferred to Amazon, and allows Amazon to perform the Super Dai Setsudan (スーパー大切断) attack.
 * Diend: Using the Diend Final AttackRide card allows Decade to execute an Dimension Shoot-style attack alongside Diend.
 * 11 Riders (11ライダーカード): With 11 Kamen Riders (Kuuga - W) execute their respective 11 Rider Kicks. Did not appear in the movie or series but included in Ganbaride games (both arcade and DS).

Showa KamenRide Cards
Though only the Rider 1 card was ever used by Decade, these cards would allow him to take the forms of the Showa Riders. The rest are only significantly used when Decade performs the Final Dimension Kick (ファイナルディメンションキック), a variation of the Dimension Kick, transforming the Shōwa and Heisei Riders into KamenRide cards for Decade to travel through as opposed to Final AttackRide cards before hitting the target.

Unused Rider Cards
CSM Decadriver= These card currently only exists as a sound in the Complete Selection Modification Decadriver released in February 2015. Concept Art=
 * KamenRide: Double
 * KamenRide: OOO
 * KamenRide: Fourze
 * KamenRide: Wizard
 * KamenRide: Gaim
 * KamenRide: Drive
 * AttackRide: Cassette Arm

Wizard
The Rider Cards, along with the other Rider Powers, were stolen from Decade by Amadum in the world within the Magic Stone, who explained that they were already his due to the Riders' powers being from the same source as evil. However, the power was soon returned thanks to the appearance of Kamen Rider Gaim, with the return of the Rider Cards immediately transforming Decade into Complete Form.

Damashii
The power of the Rider Cards can be channeled through Decade Damashii and by extension Heisei Damashii; Kamen Rider Ghost rode on manifested Rider Cards during his battle against Dark Mind Alexander.

Influences to & from Super Sentai

 * The "KamenRides" preceded the of . Like the KamenRides, the  could transform into any past sentai.
 * However, Super Sentai came first with heroes transforming into past heroes in, who appeared in  (2006). AkaRed had the ability to transform into past , he also appeared in Gokaiger.
 * In the same vein, the Final FormRides preceded the of  as like the Final FormRides, the  could transform some past Red Rangers into weapons based on their motif. The transformation, however, isn't nowhere near as graphic as in Kamen Rider Decade.
 * A nod to the Final FormRides previously occurred in of Gokaiger, where, having Gokai Changed into  from , changed from its humanoid form to Sacred Sword Mode, expressing discomfort both during and after the transformation, while the original Zubaan in Boukenger was not a human but the Golden Sword  itself, being able to assume a humanoid fighting form when the seal on the sword was turned.
 * The Rider Cards of Decade and the of ' were noted by Narutaki as one of the similarities between Decade and Gokaiger in the ' net movie ' '.
 * The design of the Rider Cards are similar to PreCards from the 2014 anime series Happiness Charge Pretty Cure! (coincidentally also a 10th anniversary season), both have a barcode on a side and a magenta border. Both are also used to access forms and powers of the main protagonists's abilities.