Forestramp$0.28A basic land with the same core role of providing mana, but in green instead of red. It is the closest functional equivalent if you need the same untapped land slot in a different color.
Plainsramp$0.07Another basic land that provides mana without entering tapped and fits the same deck construction role. It is the white-color equivalent of a basic mana source.
Islandramp$0.09A basic land that serves the same purpose of free, untapped mana production. It is the blue equivalent of Mountain for deck-building and mana fixing by color swap.
Swampramp$0.34A basic land with the same function as Mountain: a free untapped mana source. It fills the same role in black decks.
Wastesramp$0.57Like Mountain, it is a basic land that taps for mana and occupies a basic land slot. It is colorless rather than red, but functionally similar as a simple mana source.
Snow-Covered Mountainramp$0.38This is the snow counterpart to Mountain and functions identically as a basic red mana source. It is the closest direct substitute if your deck wants a Mountain specifically for snow synergies.
Terramorphic Expanseramp$0.20A budget mana-fixing land that can become a basic land, including Mountain. It is slower than a basic land because it enters tapped, but it fulfills a similar mana base role.
Evolving Wildsramp$0.30Very similar to Terramorphic Expanse, it fetches a basic land and helps color fixing. It is a slower but flexible alternative to a simple basic land slot.