I'm not good at fancy license stuff, so I'll get straight to the point(s):

You may:
Add, remove, customize, etc. this modpack and repost it, as long as you give credit.
Share the contents of this modpack privately without giving credit.
You may NOT:
Rerelease this modpack under your name.
Release a modded version of this modpack under your name (without credit)
You may not leak (real or faked) versions of this modpack.

Any violation of this license will result in punishment