[+1]: Target player discards a card
Whenever you target an opponent, their stuff, or even something in their graveyard, you can pay to look at the top two cards of your library, keeping the best one and tossing the other to your graveyard
This fits the 7-power matters theme perfectly and does the most with small creatures
Plus, at the beginning of every end step, each of your opponents lose two life for each spell or ability that forced at least one player to guess or group cards/permanents into a pile on that turn
Cards like Mind Twist, Time Walk, and Demonic Tutor ride a fine line with the metric of taking it pack three regardless of your deck, but they are a good reason to pick up black and blue dual lands and Signets that touch your main colors in the first two packs