­Gem of Becoming shifted down to common? I'm not sure that's a good idea, and even less so making three of them at common. That's a lot of acceleration, for a slow enough deck that can spare the time for it. And these won't be a high pick for aggro decks - in fact there'll be so many of them that they'll clog up the late picks.

Along with Herald of Groves that's at least four commons that can find two or more lands. Contrast with Alara block or Tarkir where the common manafixers just fix one mana at a time (Obelisk of Grixis, Grixis Panorama, Mardu Banner, Bloodfell Caves).