This is all you need. Extreme replay value because after the first four times you beat the game, you get a new mode: Magician, Fighter, Shoot, Thief and replaying with those modes is a challenge due to variations in Stats and item drop. Not to mention some of the best GBA graphics, best boss battles, and a story mode that took me like 30ish hours to finish including finding all but one of the DSS cards, the remaining card took me 10 more hours and walkthrough.
FYI, that's an Earth Whip being used against a Ghoul with two Will o'the Wisps floating above.