This mod removes the default limit of 15 bookshelves. Now you can have as many bookshelves as you want, but you can only place up to 32 that the enchanting table will actually use, due to minecraft's bookshelf placement logic.
Unfortunately though, you still can't get treasure enchants like mending, and if you use all 32 bookshelves, a lot of the time the enchants you get are garbage. Like, half of the items only give you unbreaking 3 (like armor, tridents, crossbow), so you might not want to use 32 bookshelves.
*Once I discovered these issues I decided I don't even care about using this mod anymore, but I figured I might as well upload it for any of you guys who want it (:
Как поиграть с друзьями с модом Overstacked Enchantments?
Мод Overstacked Enchantments куда интереснее в компании: поднимите сервер Майнкрафт с уже установленным модом, позовите друзей и играйте по своим правилам. Хостинг Майнкрафт для мода Overstacked Enchantments будет готов за пару минут - BungeeHost сделает всё за вас.