They did say cards from the climax of SEVENS.
RD/KP09-JP021 Kotonoha no Yousei (Speaking Fairy)
Level 1 WIND Spellcaster-Type Effect Monster
ATK 600
DEF 0
[REQUIREMENT] During the turn this card is Normal Summoned, if your opponent controls a monster, you can activate this by shuffling 3 monsters from your Graveyard into the Deck.
[EFFECT] Choose 3 monsters in your opponent’s Graveyard and shuffle them into the Deck. If you control 2 face-up monsters (non Level 1/Spellcaster=Type), you can also choose 3 monsters from your opponent’s Graveyard and shuffle them into the Deck.
RD/KP09-JP046 秘剣！流麗割撃 Hiken! Ruler Katsugeki (Secret Sword Technique! Refined Ruler Render)
Normal Spell Card
[REQUIREMENT] If your opponent controls a Spell/Trap Card, you can activate this by shuffling 1 monster (Level 8/Warrior-Type) from your Graveyard into the Deck.
[EFFECT] Choose 1 face-up monster (2500 or more ATK/2500 or more DEF) you control, it gains 2500 ATK until the end of the turn. Then, choose 1 Spell/Trap Card your opponent controls and destroy it. During this turn, monsters you control cannot attack, except 1 monster.
RD/KP09-JP053 Ghost Cyclone
Normal Spell Card
[REQUIREMENT] You can activate this only if you control no monsters.
[EFFECT] Destroy 1 Spell/Trap Card your opponent controls. If there are 3 or less monsters in your Graveyard, you can also draw 1 card.
