To tell the rarity of a card, check the rarity symbol at the bottom: black circle (common), diamond (uncommon cards), star (rare cards)
With an NM copy priced below $600, look for this card's market price to drop slightly
[L][L][C] - Mountain Swing 180 Discard the top 3 cards from your deck
Instead, both parts of a meld pair are exiled and returned to the battlefield as a melded permanent
Therefore, unlike the old back cards that were bought but put away because people didn't really understand them, there are many cards that show signs of use due to the increase in the competitive population, which, combined with the scarcity of circulation, is driving up their value