This is my list of lands that go into most decks in commander(Color allowing) that can really get a deck to that next level as far as utility goes. Most of the truly powerful lands that are colored can be found in my list for their respective color. Otherwise peruse, enjoy, and stay greedy with your manabases, as I always do. (Important note, this list does not contain well known powerful cycles, such as shocks, fetches, filters, checks etc. For those, I would recommend a quick google search on your colors, as those are mostly for fixing. These are for added utility, or are not part of a cycle.)