Dwarven Mine (ELD) from Throne of Eldraine, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Alexander Forssberg
• Card Text:
  (T: Add R.)
  Dwarven Mine enters the battlefield tapped unless you control three or more other Mountains.
  When Dwarven Mine enters the battlefield untapped, create a 1/1 red Dwarf creature token.