Hey there.

I have and idea for your game.

Why dont you add a dungon called the library, where ppl can farm pages for books, and when they have x number of pages they can combind en for a rare book, and it will cost x rare books to make a epic book, and x amout of epic books to combind it to a legendary book, I bet you peopel will farm the shit out of it. you can even make it so that you have to use keys like in doomtower, where you get 10 keys aday, and you will be able to buy more keys for real money, I predict that you will have a cashcow on your hands.