You can explore across the world in this modpack doing whatever you like. Use magic, guns, swords or whatever you prefer fighting with, hell, use all! (Wands, tomes, any kind of firearm, swords, greatswords, spears, Halberds, etc)
Or if you're not into combat you could go out exploring. You could visit frozen mazes at sea, or clip inside of a beehive. Explore the new dungeons this pack has to offer. (There are also a plethora of new biomes added and new wildlife to boot.)
And if your big into multiplayer but can't afford a server than have no worries because you can invite your friends to your world with no servers necessary. (Use the essential friend system.)
Or you could have fun.
Anyway, feel free to download the pack if you want.