Magic, Tech and Dungeons Galore!

This pack includes, upgradable chests to get more storage, more unique mobs like bears and aquatic life, several dungeons full of loot, enemies and traps. There are mods that allow you to create spells, enhance weapons with blood to deal more damage or have extra affects. There are dozens of new biomes implemented as well as new terrifying mobs to discover.
You can create spells to give yourself better utility or fight in combat with.

Make machines and storage using applied energistics as well as mech suits

Fight in dastardly raids with pyrologers and more

There are other dimensions to explore such as the twilight forest.
You can make backpacks to give yourself more inventory as you explore and build.

Eyes of ender are scattered across the world meaning you must adventure out to be able to defeat the ender dragon.