X-Men Legacy is a bit of a hard sell, which I noted in my review of the first issue that came out last week, but so far it's worth the effort. It centers around David Haller, the son of the late Charles Xavier, who has a massive array of powers and a legion of distinct personalities living in his brain which corresponds to each one.
If you're still on the fence, here's something for you. Marvel's release a trailer video in support of Simon Spurrier's book, and it does create something of a mood. The tone of the book itself is a bit less dour, but it's only one issue in, and this is a series that promises to be entirely unpredictable.
Check out this trailer for X-Men Legacy.