Ravenous Baboons

The math reveals the design: most dedicated land destruction of this era cost three or four mana on its own, so the four-mana price tag is paying for the destroy effect first, with the 2/2 body folded in as a bonus rather than the headline. That inversion is the whole point. A pure Stone Rain does its work and is gone; this leaves a clock behind, however modest, and gives any deck willing to slot a small creature a reason to run disruption it would not otherwise pay full sorcery price for. The restriction to nonbasic land is the balancing friction: it cannot strand an opponent off color the way an unrestricted strip can, but it punishes exactly the greedy fixing (dual lands, fetches, utility lands) that a fair deck is least able to replace. That targeting also makes it a creature-shaped answer to the value lands and manlands that fall outside conventional removal, which is the angle that has kept it relevant long after a 2/2 stopped threatening anyone. Because the destroy clause fires on entry, the effect reattaches every time the body is recurred or blinked, turning one-shot disruption into a repeatable tax in any shell built to abuse enters-the-battlefield triggers. It is a workmanlike piece of design: land destruction wearing a creature's clothes so that the disruption survives in any deck willing to field a small monkey to carry it.