60 cards where the card types include “land” and the color identity is B

Aclazotz, Deepest Betrayal // Temple of the Dead (The Lost Caverns of Ixalan #88)
Aclazotz, Deepest Betrayal // Temple of the Dead (The Lost Caverns of Ixalan #88)
Agadeem's Awakening // Agadeem, the Undercrypt (Zendikar Rising #90)
Agadeem's Awakening // Agadeem, the Undercrypt (Zendikar Rising #90)
Arguel's Blood Fast // Temple of Aclazotz (Ixalan #90)
Arguel's Blood Fast // Temple of Aclazotz (Ixalan #90)
Barad-dûr (The Lord of the Rings: Tales of Middle-earth #253)
Barren Moor (Commander 2021 #277)
Blackbloom Rogue // Blackbloom Bog (Zendikar Rising #91)
Blackbloom Rogue // Blackbloom Bog (Zendikar Rising #91)
Black Dragon Gate (Commander Legends: Battle for Baldur's Gate #347)
Blighted Fen (Battle for Zendikar #230)
Bog Wreckage (Odyssey #314)
Bojuka Bog (Outlaws of Thunder Junction Commander #273)
Bottomless Vault (Fifth Edition #411)
Cabal Coffers (Modern Horizons 2 #301)
Cabal Pit (Odyssey #315)
Cabal Stronghold (Dominaria #238)
Castle Locthwain (Commander Legends: Battle for Baldur's Gate #884)
Crypt of Agadeem (Commander 2014 #288)
Dakmor Salvage (Ultimate Masters #240)
Desert of the Glorified (Hour of Devastation #171)
Ebon Stronghold (Masters Edition II #228)
Everglades (Commander 2014 #294)
Gate of the Black Dragon (Alchemy Horizons: Baldur's Gate #77)
Grasping Shadows // Shadows' Lair (The Lost Caverns of Ixalan #108)
Grasping Shadows // Shadows' Lair (The Lost Caverns of Ixalan #108)
Hagra Mauling // Hagra Broodpit (Zendikar Rising #106)
Hagra Mauling // Hagra Broodpit (Zendikar Rising #106)
Havengul Laboratory // Havengul Mystery (Universes Within #9)
Havengul Laboratory // Havengul Mystery (Universes Within #9)
Hidden Necropolis (The Lost Caverns of Ixalan #275)
Hive of the Eye Tyrant (Adventures in the Forgotten Realms #258)
Hostile Hostel // Creeping Inn (Innistrad: Midnight Hunt #264)
Hostile Hostel // Creeping Inn (Innistrad: Midnight Hunt #264)
Howltooth Hollow (Lorwyn #269)
Ifnir Deadlands (Hour of Devastation #179)
Lake of the Dead (Vintage Masters #302)
Leechridden Swamp (Duel Decks: Nissa vs. Ob Nixilis #65)
Malakir Rebirth // Malakir Mire (Zendikar Rising #111)
Malakir Rebirth // Malakir Mire (Zendikar Rising #111)
Memorial to Folly (Commander 2020 #288)
Minas Morgul, Dark Fortress (Tales of Middle-earth Commander #514)
Mortuary Mire (Commander Legends: Battle for Baldur's Gate #900)
Peat Bog (Mercadian Masques #322)
Pelakka Predation // Pelakka Caverns (Zendikar Rising #120)
Pelakka Predation // Pelakka Caverns (Zendikar Rising #120)
Phyrexian Tower (Jumpstart #493)
Piranha Marsh (Zendikar #222)
Polluted Mire (Dominaria Remastered #253)
Shizo, Death's Storehouse (Dominaria United Commander #233)
Snow-Covered Swamp (Kaldheim #280)
Spawning Pool (Tenth Edition #358)
Subterranean Hangar (Mercadian Masques #329)
Swamp (Outlaws of Thunder Junction #281)
Takenuma, Abandoned Mire (Kamigawa: Neon Dynasty #278)
Tarrian's Journal // The Tomb of Aclazotz (The Lost Caverns of Ixalan #126)
Tarrian's Journal // The Tomb of Aclazotz (The Lost Caverns of Ixalan #126)
The Black Gate (Tales of Middle-earth Commander #80)
The Dross Pits (Phyrexia: All Will Be One #251)
Thriving Moor (Ravnica: Clue Edition #253)
Tomb Fortress (Warhammer 40,000 Commander #168)
Tomb of Urami (Saviors of Kamigawa #165)
Unholy Grotto (Onslaught #327)
Urborg (Masters Edition III #214)
Vault of Whispers (Planechase #141)
Vivid Marsh (Commander 2017 #292)
Volrath's Stronghold (Tempest Remastered #248)
Westvale Abbey // Ormendahl, Profane Prince (Shadows over Innistrad #281)
Westvale Abbey // Ormendahl, Profane Prince (Shadows over Innistrad #281)
Witch's Cottage (Throne of Eldraine #249)
Zof Consumption // Zof Bloodbog (Zendikar Rising #132)
Zof Consumption // Zof Bloodbog (Zendikar Rising #132)

The message was clear to Sorin—time to search for something else.