Madblind Mountain

The shuffle clause is the whole curiosity here: a land that taps for red like any Mountain but also spends a red mana and a tap to reshuffle your library, gated behind controlling two or more red permanents. This is one of those nonbasic lands that bolts a marginal utility onto an otherwise vanilla mana source, paying for the tiny upside with an enters-tapped tax. What that upside actually buys is narrow: a shuffle matters when you want to reset the top of your deck after scrying away a known card, dodge a top card you'd rather not draw, or shake loose a fresh draw step. The two-red-permanents condition gates the effect off turn one, so by the time you can reliably meet it you are deep enough into a red deck that the reshuffle is incidental rather than central; the restriction is what stops the activation from ever being a free, immediate trick. As a Mountain by type, it counts for spells and abilities that care about basic land types even though it is nonbasic, a quiet bonus that costs nothing. The shuffle is the headline, but the honest read is a tapland with a sometimes-relevant button attached, built for an era when even small textual riders on lands were considered worth the entering-tapped cost.