Someone got a hand on a box of Circuit Break and the Circuit Break Guide Book and is leaking cards.

CIBR-JP058 星遺物を巡る戦い Sei Ibutsu wo Meguru Tatakai (Battle Over the Star Relics)

Quick-Play Spell Card

(1) Banish 1 face-up monster you control until the End Phase, then target 1 face-up monster your opponent controls; that opponent’s monster loses respective ATK and DEF equal to the respective original ATK and DEF of the monster banished to activate this card.

CIBR-JP002 コンデンサー・デスストーカー (Condenser Death Stalker)

Level 5 LIGHT Cyberse-Type Effect Monster

ATK 2000

DEF 1000

You can only use the (2)nd effect with this card’s name once per turn.

(1) When this card is Normal Summoned: You can target 1 Cyberse monster you control, other than this card; that monster gains 800 ATK while this monster is face-up on the field.

(2) If this card in a Monster Zone is destroyed by a card effect and sent to the GY: Inflict 800 damage to both players.

CIBR-JP062(?) やりすぎた埋葬 Yarisugita Maisou (Premier Burial)

Equip Spell Card

You can only activate 1 card with this card’s name per turn.

(1) Activate this card by discarding 1 monster from your hand, then target 1 monster in your GY with an original Level lower than the discarded monster’s; Special Summon it, and if you do, equip it with this card.

(2) The equipped monster’s effects are negated (if any).

Link Restart

Counter Trap Card

(1) When a monster effect, or Spell/Trap Card, is activated that would inflict damage to you: Negate that activation, and if you do, Special Summon 1 Link Monster from your GY.

Remote Reborn

Normal Trap Card

(1) Target 1 monster in your opponent’s GY; Special Summon it to one of your opponent’s Main Monster Zones that a Link Monster you control points to.

Elemental Grace Doriado

Level 9 LIGHT Spellcaster-Type [Special Summon] Effect Monster

ATK 0

DEF 0

Cannot be Normal Summoned/Set.

Must be Special Summoned (from your hand) by having 6 or more different Attributes among the monsters in both GYs, and cannot be Special Summoned by other ways.

(1) This card gains 500 ATK and DEF for each different Attribute among the monsters in both GYs.

(2) If your opponent would Special Summon a monster(s) (Quick Effect): You can banish 3 monsters from your GY; negate that Special Summon, and if you do, destroy that monster(s).

Metaphys Executor

Level 10 LIGHT Wyrm-Type Special Summon Effect Monster

ATK 3000

DEF 2500

Cannot be Normal Summoned/Set.

Must be Special Summoned (from your hand) by banishing 5 “Metaphys” cards with different names among the face-up cards on your field and/or in your GY, and cannot be Special Summoned by other ways.

(1) This card on the field cannot be destroyed by, and cannot be banished by, card effects.

(2) Once per turn, if your opponent controls more cards than you do: You can target 1 of your banished “Metaphys” monsters; Special Summon it, but banish it during the End Phase of next turn.

Moe Takemitsu / Burning Bamboo Sword

Continuous Spell Card

(1) If you activate a “Bamboo Sword” card while this card is face-up in your Spell & Trap Zone: You can skip your opponent’s next Main Phase 1.

Rival Arrival

Quick-Play Spell Card

You can only activate 1 card with this card’s name per turn.

(1) During the Battle Phase: Immediately after this effect resolves, Normal Summon 1 monster.

Ojama Duo

Normal Trap Card

(1) Special Summon 2 “Ojama Tokens” (Beast-Type/LIGHT/Level 2/ATK 0/DEF 1000) to your opponent’s field in Defense Position. They cannot be Tributed for a Tribute Summon, and each time 1 is destroyed, its controller takes 300 damage.

(2) During either player’s turn, except the turn this card was sent to the GY: You can banish this card from your GY; Special Summon 2 “Ojama” monsters with different names from your Deck.

Eiseihei Muscler / Medic Muscler

Level 4 WATER Warrior-Type Monster

ATK 2200

DEF 100

(1) Whenever this card would inflict battle damage to a player(s), that player(s) gains that amount of LP instead.

Shingan no Saidan / Altar of the Mind’s Eye

Field Spell Card

(1) Any battle damage a player takes becomes 1000.

Subayai Beaver / Nimble Beaver

Level 2 WATER Beast-Type Effect Monster

ATK 400

DEF 200

(1) When this card is Normal Summoned: You can Special Summon 1 Level 3 or lower “Nimble” monster from your Deck or GY.

Arijibaku / React-ant

Level 3 EARTH Insect-Type Flip Effect Monster

ATK 1500

DEF 1000

You can only use each effect [among the (1)st and (2)nd effects] with this card’s name once per turn.

(1) FLIP: Each player takes 1000 damage.

(2) If this card is destroyed by battle or card effect and sent to the GY: Your opponent takes 1000 damage.

(TL note: Arijibaku is wordplay on arijigoku, “antlion”, and jibaku, “self-destruct”)

Crawler Ranvier

Level 2 EARTH Insect-Type Flip Effect Monster

ATK 1100

DEF 900

You can only use each effect [among the (1)st and (2)nd effects] with this card’s name once per turn.

(1) FLIP: You can target up to 2 “Crawler” monsters in your GY; add those monsters to your hand.

(2) If this face-up card in its owner’s control leaves the field because of an opponent’s card effect: You can Special Summon, in face-down Defense Position, 2 “Crawler” monsters from your Deck with different names, except “Crawler Ranvier”.

Crawler Glia

Level 2 EARTH Insect-Type Flip Effect Monster

ATK 700

DEF 1500

You can only use each effect [among the (1)st and (2)nd effects] with this card’s name once per turn.

(1) FLIP: You can Special Summon, in face-up Attack Position or face-down Defense Position, 1 “Crawler” monster from your hand or GY, except “Crawler Glia”.

(2) If this face-up card in its owner’s control leaves the field because of an opponent’s card effect: You can Special Summon, in face-down Defense Position, 2 “Crawler” monsters from your Deck with different names, except “Crawler Glia”.

Senpuuki Striborg / Whirlwind Machine Striborg

Level 5 WIND Machine-Type Effect Monster

ATK 2200

DEF 2200

To Tribute Summon this card face-up, you must return Tributed monsters to the owner’s hand instead of sending them to the Graveyard.

(1) Once per turn: You can discard 1 card; return to the owner’s hand all cards your opponent controls in this card’s column.

Dark Angel

Level 5 DARK Fairy-Type Effect Monster

ATK 0

DEF 0

(1) When a Fairy-Type monster you control is targeted for an attack: You can Tribute that monster, then send this card from your hand to the GY, then target 1 face-up monster you control; change the attack target to that monster you control, and if you do, the targeted monster gains ATK equal to the Tributed monster’s original ATK for the rest of this turn.

Source: yu-gi5000guard and assorted