35 cards where the cards aren’t reprints and the card types include “mountain”

Stomping Ground (Guildpact #165)
Steam Vents (Guildpact #164)
Blood Crypt (Dissension #171)
Cinder Glade (Battle for Zendikar #235)
Sacred Foundry (Ravnica: City of Guilds #280)
Smoldering Marsh (Battle for Zendikar #247)
Jetmir's Garden (Streets of New Capenna #250)
Ketria Triome (Ikoria: Lair of Behemoths #250)
Xander's Lounge (Streets of New Capenna #260)
Volcanic Island (Limited Edition Beta #287)
Badlands (Limited Edition Alpha #277)
Ziatora's Proving Ground (Streets of New Capenna #261)
Savai Triome (Ikoria: Lair of Behemoths #253)
Raugrin Triome (Ikoria: Lair of Behemoths #251)
Taiga (Limited Edition Alpha #282)
Plateau (Limited Edition Alpha #279)
Sheltered Thicket (Amonkhet #248)
Canyon Slough (Amonkhet #239)
Raucous Theater (Murders at Karlov Manor #266)
Wooded Ridgeline (Dominaria United #260)
Commercial District (Murders at Karlov Manor #259)
Thundering Falls (Murders at Karlov Manor #269)
Sacred Peaks (Dominaria United #254)
Molten Tributary (Dominaria United #251)
Highland Forest (Kaldheim #261)
Elegant Parlor (Murders at Karlov Manor #260)
Geothermal Bog (Dominaria United #247)
Dwarven Mine (Throne of Eldraine #243)
Alpine Meadow (Kaldheim #248)
Volatile Fjord (Kaldheim #273)
Sulfurous Mire (Kaldheim #270)
Madblind Mountain (Shadowmoor #274)
Gate to Tumbledown (Alchemy Horizons: Baldur's Gate #81)
Mountain (Limited Edition Alpha #292)
Snow-Covered Mountain (Ice Age #379)

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