In addition, Invasion of Ixalan saw play in the Gruul Midrange Pioneer deck that made top eight of the recent United States Regional Championship, which also has access to efficient four-power Creatures like Bonecrusher Giant
Magic: The Gatherings Booster Fun scheme has felt a lot less fun recently
Cantrips, some of which could draw you lots of cards (like Foreshadow + Portent), could draw you into the lands you needed, but sometimes you just used one of your Counterspells to stop whatever they were doing for the turn and give yourself another turn to try to draw land
Lands that produce more than 1 mana, like the Karoo lands or Lotus Field, can be untapped for maximum mana generation
Search your library for a card that shares a color with a legendary creature you control, reveal it, put it into your hand, then shuffle
There are also a few from Final Fantasy (and maybe Assassins Creed) that could work in the right build