If you can protect Glissa and give it trample, good luck to your opponent
Attrition If you want to punish your opponents for running anything but black, Attrition gives you a stream of interaction
Loading up on nothing but card draw means you'll draw your entire deck but have no way to win
A deck that focuses on controlling the tempo of the game and manipulating day and night cycles would benefit from using the Day Card // Night Card in Magic: the Gathering
In case you missed it, Wizards of the Coast has officially added the Surveil and Landfall keyword to a bunch of older cards, sometimes making their rules text clearer, and sometimes making the card outright better.
While limiting yourself to only a single copy of powerful cards like Thoughtseize, Fatal Push, or Fable of the Mirror-Breaker might seem restrictive, every card included in the deck is a perfectly fine fit for a midrange strategy