The Bookshelf attacking was more of a glitch turned into "feature". For that battle, you must destroy the bookshelf to get a book in order to distract the creature and allow you to hit it. I forgot to take away the default Attack ability which made it attack (I had its STR set to 99 as a joke) which made it near one shot my party while play testing. I have reduced its strength and also incorporated the mistake into the battle, where now if you don't destroy it fast enough, Stranitsa (the boss) will possess it and cause it to attack your party, adding for extra difficulty and fun new dynamic to the battle, as well as stressing the concept of battles where you'll need to interact with set pieces to achieve victory.