33 cards where the color identity is RU and the card types include “land”

Caldera Lake (Tempest Remastered #235)
Cascade Bluffs (Outlaws of Thunder Junction Commander #276)
Desolate Lighthouse (The Lost Caverns of Ixalan Commander #327)
Eroded Canyon (Outlaws of Thunder Junction #256)
Ferrous Lake (Outlaws of Thunder Junction Commander #294)
Fiery Islet (Modern Horizons #238)
Frostboil Snarl (Outlaws of Thunder Junction Commander #298)
Highland Lake (Commander 2019 #251)
Izzet Boilerworks (Outlaws of Thunder Junction Commander #302)
Izzet Guildgate (Foundations #691)
Library (Ravnica: Clue Edition #18)
Molten Tributary (Dominaria United #251)
Nivix, Aerie of the Firemind (Duel Decks: Izzet vs. Golgari #36)
Peculiar Lighthouse (Duskmourn: House of Horror #265)
Prismari Campus (Commander Legends: Battle for Baldur's Gate #909)
Restless Spire (Wilds of Eldraine #260)
Riverglide Pathway // Lavaglide Pathway (Zendikar Rising #264)
Riverglide Pathway // Lavaglide Pathway (Zendikar Rising #264)
Rush of Inspiration // Crackling Falls (Modern Horizons 3 #257)
Rush of Inspiration // Crackling Falls (Modern Horizons 3 #257)
Shivan Reef (Outlaws of Thunder Junction Commander #320)
Silverbluff Bridge (Modern Horizons 2 #255)
Spirebluff Canal (Outlaws of Thunder Junction #270)
Steam Vents (Ravnica Remastered #288)
Stormcarved Coast (Innistrad: Crimson Vow #265)
Storm the Vault // Vault of Catlacan (Rivals of Ixalan #173)
Storm the Vault // Vault of Catlacan (Rivals of Ixalan #173)
Sulfur Falls (Outlaws of Thunder Junction Commander #322)
Surtland Frostpyre (Kaldheim #271)
Swiftwater Cliffs (Foundations #268)
Temple of Epiphany (Foundations #699)
Thundering Falls (Murders at Karlov Manor #269)
Training Center (Commander Masters #434)
Volatile Fjord (Kaldheim #273)
Volcanic Island (Vintage Masters #324)
Wandering Fumarole (Commander Legends: Battle for Baldur's Gate #928)

In the blink of an eye, they strode from deep snow to the end of this search.