These common cards make up most of the cards in the game, leaving a scant minority of valuable cards
Whirler Rogue , Nadir Kraken , Wavesifter , and Serene Sleuth do help the theme, but there are more potent Clue cards out there
The Fable provides so much value across multiple turns, its often just too hard to keep up
Flameblade Angel: great effect that can ping your opponent to death, but its a 6 drop rare that doesn't kill you in a few terms and that means its a guaranteed junk rare in Modern, and only somewhat playable in Standard constructed
x1] [Your Turn] Give all of your opponent's Characters 1 cost
Then at the beginning of your combat you can return, for free, a Pirate from your graveyard to the battlefield but you'll put a finality counter on it so if it would die, it gets exiled