Hammerheim

The secondary ability was a piece of metagame engineering: in a 1994 environment where Plainswalk, Islandwalk, and the other basic-land evasion keywords functioned as the primary "unblockable" lever, a land that could strip landwalk on demand answered an entire category of threat. The clause is built generously: it hits any landwalk, on any creature regardless of color, at instant speed, for nothing beyond the tap. The design discipline lives in that tap. Activating the ability turns the land sideways, so it cannot also produce red that turn, and the tap inherently caps the effect at once per turn. The real choice is a small one repeated every turn: mana or answer, never both. It taps for red, but it is not a Mountain (it lacks the basic land type), which keeps it off fetchland targets and out of domain counts. That the landwalk clause matters less today than it did in 1994 says more about where the keyword sits in the modern design pipeline than about the card itself; the moment a set leans into landwalk again, this is a clean, repeatable answer to the whole keyword family, waiting in the mana base. The legendary supertype, once a meaningful tax under the old "one copy in play" rules, now reads closer to a footnote.