Here is what 20,768 tracked games show, ranked by win-rate lift over baseline using the lower bound of the 95% confidence interval, so a thin sample can't top the chart
In other words, you spend a turn "investing" in Lumbering Fallsand in return, you'll find yourself with a powerful creature land in play later in the game
Id highly recommend you try out this deck in a casual setting, or even a high-powered one
Its easy to make infinite mana with this and either Grim Monolith or Basalt Monolith, and it works well with cards like Dino DNA with expensive activated abilities
whenever you cast an Eldrazi spell, Ulalek says that you may pay two extra colorless mana, and if you do, you get to copy all spells, activated abilities, and triggered abilities you control