This is where you'll find all the dinosaurs that have an advantage in mountain terrains. Use this category to construct decks for mountain terrains. (Hint: If you are building a Mountain Terrain deck then it is highly recommended that adding or building a Pterosaur in your deck around the Mountain Terrain will give them a tremendeous increase in HP and ATK (Even higher if your leading attack Pterosaur is an SS Rare ). Also avoid using Marine Reptile and Theropods in the Mountain Terrain area for it will greatly decrease their HP & ATK.)