Cursed Book (Enchantment table pest)

     The Cursed Book would be a hostile mob that spawns from the bookshelves around your enchantment table and attacks players with its gaping mouth filled with teeth. A Cursed Book spawned if one of these conditions are met; a player uses the enchantment table five times or a player places an enchantment book with a curse on it in the enchantment table (for whatever reason). The Cursed Book deals a decent amount of damage per hit, but doesn't have too much health so it's fairly easy to clear out. When defeated the Cursed Book would drop a few possible items, a book, a few iron nuggets, an enchanted book with a curse (if used to summon it), and occasionally some lapis lazuli.