Mono-Blue is not the simplest deck in the meta (that probably goes to Mono-White Aggro builds), but it is also far from the most complex
Voracious Bibliophile is some seriously good card draw, especially if you run spells like the TBD Intervention cycle, Curse of the Swine, March of Swirling Mist or Sublime Epiphany
Next is being Paralyzed, which renders one unable to attack or retreat during their next turn
You have the sometimes difficult choice of trading with their 1 toughness dork or finding a land
They'd be gaining massive card advantage, but what use is it your opponent is down four lands, he's out of cards, and you are dead
3 Duskana, The Rage Mother The Bears Are On The Case An incredibly unique legendary creature, Duskana, the Rage Mother slots well into a deck with all sorts of face down shenanigans, but also if you want to put together a deck dedicated to 2/2 creatures, like Bears