Ressource pack AND custom maps. So basically user created content.
Want a mob to drop a specific item, at a specific location, while still being vanilla spawned (not by command block), BAM, loot Table!
Want a chest to be filled randomly (because : A. you don't want fixed odd B. Laziness), BAM, loot TableTable.
Custom enchanted weapon also available. Mojang will not be accountable if a ressource pack loot Table unbalance the game.
Oh ok. Thanks.