Dungeons & Diamonds is a modpack that, though originally designed without a theme in mind, has developed a medieval theme. When this theme was decided upon, many mods were cut from the pack in order to focus it a little more on magic, plundering, and exploration. A few new mods were included that had previously been overlooked, as well.

Current features include, but are not limited to:

Magic: Wands that can cast many, many possible spells. Enchanted gear. Enchanted weapons and tools. Even enchanted crops.
Villages: Village spawn rates have been increased with the Mo' Villages mod and finding them is no longer like finding a tree in a desert. They also have several new buildings and citizens.
Dungeons: Villages aren't the only places you can look for new loot to hoard. There are tons of dungeons for you to pillage. Grab your diamond backpacks and go conquer a castle. Then return home with an inventory full of full diamond backpacks that you can dump into your third ME system cause your first two are already full of loot. (maybe see a therapist too cause that's a hoarding problem)
Building: Who said you had to build your own buildings? Let Minecolonies do that for you! Don't wanna use that? Then just grab a builder's wand!
Airships: Build your own personal ship and then fly around in it! Do I really need to say anything else?
Furniture: Many of our mods were added purely because we love to decorate our builds with beautiful furniture. Now, with Decocraft, MrCrayfish's Furniture Mod, Bibliocraft, and several others, we can do just that until our hearts give out...at which point we'll just do it from beyond the grave.
Mobs: Ever wanted to see rhinos in minecraft? No? Well, now you can anyways. Alongside several other passive and hostile animals and monsters.