Book of the Day
by FireNH
This is a simple server-side mod that makes librarian villagers sell a different enchanted book each time they refill their trades.
This mod was made as a nerf to villager-based enchanted book trading halls that allow players to get tons of enchanted books through trading. With this mod installed, villagers will change what enchanted book they trade every time they restock, so villager trading halls for enchanted books become a lot less useful. Of course this is all up to personal preference, but I find it a welcome addition.
The mod also features a number of configuration options, including the chance for the trade to be reset, the chance to reset the trade when a trade offer hasn't been traded with, etc.
This mod can be run on the server without clients needing to have it as well.
Requires Fabric API