Ruin in Their Wake

Rampant Growth's wrinkle here is the prerequisite: this is a Rampant Growth that only ramps if you already own the most marginal land in the game. Control a Wastes and the spell behaves like the green ramp staple it resembles, fetching a basic onto the battlefield tapped at two mana. Control no Wastes and it deflates into a slow Lay of the Land, putting the basic into your hand instead. That conditional was the point: it exists to make Wastes worth running, the one card built explicitly to give the colorless basic a reason to be in your deck. The devoid keyword is the flavor stitching, a green ramp effect rendered colorless so it reads as part of the Eldrazi incursion rather than the forest. As a piece of design it is a deliberate downgrade of a known-good rate, gated behind a deckbuilding tax most decks will not pay. The niche it was made to serve is narrow by construction: without the colorless basic in your list, you are running a strictly worse tutor, and with it, you have accepted a subtheme most ramp shells have no reason to touch.