The Tome is an interesting "improved victory" card. This artifact, useable by any champion, lets you send an opponent's card to the Abyss without the opponent have any chance to play it.

Adding the shuffling effect is very important to stopping people from going after a certain card that the opponent moved to a place in their deck with cards like Runes of the Future (13/RR-chase) or Rengarth Oracle (503/4th), but it also stops the effectiveness of those cards (as shuffling means the desired card is no longer where placed.

The Tome is also one of the few cards that lets you shuffle any opponent's deck (most cause your opponent to shuffle their deck), and therefore is not a bad though if you have real worry that your opponent is cheating (though I find Spellfire players as a group rarely does that sort of thing). You can choose one of three cards after the cut to send to the Abyss, and this would be a great way to abyssalize more realms, especially if combine with other realms to the Abyss cards like Estate Transference (437/3rd), or the Espionage! (18/BR) / Three Card Monte (27/NS) combo.

However, there is one large requirement to using this power; you have to win a round of combat. With only a negateable +2 bonus, you need to have very strong support cards to let you use the Tomes' power.

Therefore, I'd only use this deck as the only "improved victory" card in a deck with some good instant defeat allies or spells, and only for the idea of abyssalizing realms (or key cards like A Sure Thing).