The Rouze Cards (ラウズカード,Rauzu Kādo?) are mystical cards used by the Riders of Kamen Rider Blade.
Rouze Cards are obtained when an Undead has been defeated, which is indicated when their Ouroboros Buckle opens revealing what category and suit they belong to, and has been sealed away by either a Rider using a Proper Blank card, Common Blank card or the Stone of Sealing. Normally, Category 2-Queen Cards have the Ouroboros patch on the picture of the species which they resemble.
The cards are categorized into Categories, the exact same way the Undead are: Aces, the Numbers (2-10), and the Royal Club (Jacks, Queens, & Kings). They are also categorized into 4 suits: the Spades, the Diamonds, the Hearts, and the Clubs. The Joker Cards, the Wild Card and the Mighty cards used by Kamen Riders Glaive, Lance, and Larc and Vanity Card which created by Four different Category King Cards belong to none of either categories or suits.
Each Rouze Card allows the Riders access to the powers of the Undeads sealed within them. Rouze Cards need AP to be used, the amount of which is needed for the card to be used is located on the right side of the card just below the Undead's picture. Riders can gain AP by fighting an opponent while wearing their Rider suit and the amount of AP they have accumulated is gauged by a digital counter located somewhere on their weapons.
The only Cards that don't use AP are Category Ace cards, with the Royal Club Cards serving to increase a Riders' AP count. Category Joker Undeads can also use Rouze Cards to assume the form of the Undead that is sealed within the card and access all of their powers.
These card allow the Riders to transform into their suits. These Undeads were regarded as the best fighters.
These cards allow the Riders to assume Jack form when used in conjunction with an Absorb Queen Card of the same suit with the use of a Rouze Absorber. Since Hajime is the Joker Undead, he has no need for a Rouze Absorber, so his Jack Card just allows him to become the Wolf Undead.
Fusion Eagle: Allows Blade to assume Jack Form
Fusion Peacock: Allows Garren to assume Jack Form
Fusion Wolf: Allows Hajime to become the Wolf Undead
Fusion Elephant: Allows Mutsuki to assume Jack Form (Never Used)
These cards allow the Riders to use their Fusion Jack and Evolution King cards with the use of a Rouze absorber to change into their Jack and King forms. Hajime never had a Rouze Absorber so it just allows him to become the Undead sealed inside the card.
Absorb Capricorn: Allows Blade to form change
Absorb Serpent: Allows Garren to form change
Absorb Orchid: Allows Hajime to become the Orchid Undead (Never Used)
Absorb Tiger: Allows Leangle to form change (Once used to become the Tarantula Undead with the Evolution Tarantula card to properly seal the Spider Undead)
These cards allow the Riders to assume King form when used in conjunction with an Absorb Queen Card of the same suit with the use of a Rouze Absorber. For Hajime it allowed him to fuse with all of his cards and assume Wild Form.
Evolution Caucasus: Allows Blade to assume King Form
Evolution Giraffa: Allows Garren to assume King Form (Never Used)
Evolution Paradoxa: Allows Chalice to assume Wild Chalice (if all Suit of Heart's Rouze Card seals are completely collected)
Evolution Tarantula: Allows Leangle to assume King Form (Only used to become Tarantula Undead to fight and reseal the Spider Undead)
When Kamen Rider Blade initiates King Form, his Rouze Cards change their appearance and their AP Cost will increase. In addition, their cards are fused with the Kamen Rider to form armor, allowing him to call upon that Card's power without needing the Blay Rouzer to do so.
Change Beetle: Boosts the power of Combos when in King Rouzer.
Slash Lizard: Effects boosted when in King form
Beat Lion: Sets fist on fire.
Tackle Boar: Enhances the momentum behind tackles.
Kick Locust: Enhances leg strength and power behind kicks.
Thunder Deer: Supplements the next attack with elemental lightning/Covers both Blay and King Rouzers in electricity powering up the attack.
Metal Trilobite: Transmutes body into metal to reduce damage.
Magnet Buffalo: Enables a limited control of magnetism.
Mach Jaguar: Enhances speed and agility.
Time Scarab: Allows the power to control time within a certain radius.
Fusion Eagle: Boosts the power of Combos when in King Rouzer.
Absorb Capricorn: Boosts the power of Combos when in King Rouzer.
Evolution Caucasus: Boosts the power of Combos when in King Rouzer.
These cards belong to none of the categories and have some very unique powers.
Joker: Joker's Rouze card.
Joker: AR version of Joker card that appeared in Kamen Rider Decade where the four Rider symbols are on each corner. Created from the DNA of all four Ace Undead. Allows Hajime Shijo to assume Joker form.
Albino Joker: Albino Joker's Rouze card
Wild: The combination of all the cards in the Suit of Hearts; allows Chalice to execute the Wild Cyclone
Fourteen: Used to Summon Jashin 14 (included in the Rouze Card Collection Set, not seen used in the series)
Vanity Card (Blank): Created with combining all four Category King Cards and use to trap a human as a sacrificial lamb for evoking Jashin-14.
Vanity Card (with human sacrifice sealed): Use to evoke Jashin-14 from the Relief.