Mechanised Sorcery

Bringing together staple mods like Thaumcraft, Mekanism, and Buildcraft, as well as a whole load of common favourites, this mod pack aims to create a deep experience by combining magic and technology. With that, there are extra mods to ensure you never get bored, including Millénaire; to add some friendly NPCs to take work of your hands, ICBM Classic; for when your friends step out of line, and Mystcraft; as a world bound by strict rules just isn't enough.

Optifine

Unfortunately, optifine does not give permission to include it in modpacks, however as I cannot help but recommend it, here's a tutorial to install it

1. • Download the latest 1.7.10 version of optifine from here
   • Run the jar file that you've just downloaded, and click "extract" 
   • A new file should be generated in the same directory as the original one, copy that into the mods folder of Mechanised Sourcery (which you can navigate to from the twitch client by clicking the cog in the top right corner of the Modpack, and clicking "open folder" 
   Credits
2. Links to mods on curse can be found here.
4. Extra Credits

Railcraft

Industrialcraft 2

Issues

If you have have the misfortune of encountering any issues, please report them here, make sure you very specifically report them here, as mod authors don't need to be bugged when I've messed up compatibility or a config option.