Dragon arenas are an absolute trial by fire to the skills of any sifu player, you will come out of them either hating the game, being a better player or both. They're built like puzzles, where you're meant to solve them a specific way while still being mechanically very challenging, requiring you to master specific deeper mechanics in the game to succeed. The suits are just the bait to reel you in.

And best of all, it's all free.