Super Mario RPG players will collect and use a wide range of items during their time in Mario’s world. Whether equipping new accessories or utilizing special items in combat, Mario and his friends will always have something to bring into play.
The Crystal Shard, however, is unlike any other item in Super Mario RPG. It’s a unique object that is challenging to obtain. Yet, once some players get their hands on it, there’s a bit of confusion surrounding the item’s significance and properties
The Crystal Shard in Super Mario RPG is a special item given to players as a reward for defeating Culex in a post-game rematch. It’s granted as a symbol of “ultimate strength,”
having bested Culex in a 3D fight. And that’s all it is: a symbol that players can carry to showcase their efforts. The item provides no tangible bonuses or battle effects.
With that said, completionists looking to 100% the game must acquire the Crystal Shard. Defeating Culex in the post-game rematch is necessary as part of the post-game content.
Culex appears in Super Mario RPG as the game’s superboss. His area is accessible before players can take on Smithy, though he’s arguably one of the most formidable enemies.