Butterfree from the SM Base Set is a Rare rarity Reverse Holofoil card, numbered #3/149. Currently valued at $0.57, it has seen a 14% increase in market value over the past 30 days, indicating a growing interest among collectors. As a notable evolution of Metapod, it highlights the importance of Butterfly Pokémon in the game, making it a relevant piece for enthusiasts and competitive players alike.