For instance, Arid Mesa can be sacrificed to search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle. While this can be used for basic lands of the stated types, it can also be used to fetch nonbasic lands with the given types
If you find yourself staring down a Tormods Crypt as a graveyard deck, or Aura Shards in Enchantress, you can stop their activations/triggers and get them out of the way to boot
Nashi, Moon's Legacy Sometimes one more copy of your rat is enough and Nashi, Moon's Legacy practically gives you flashback for legendaries and rats in your graveyard
I mean, we all know that
When things change at the top in magic they change quite drastically
Alternatively, you can run it alongside cards like Crucible of Worlds and Icetill Explorer, and simply replay the lands that you lose