- make the librarians have these books in stock Protection IV Unbreaking III Mending Depth Strider III Sharpness V Sweeping Edge III Efficiency V Silk Touch Fortune III Feather Falling IV Respiration III Aqua Affinity Swift Sneak III Thorns III Soul Speed III Fire Aspect II Knockback II Density V Breach IV Lunge III Riptide III These replace the random enchanted book trades normally generated by vanilla villagers. with prices that vary from 8 emeralds to 50 emeralds (and one book)