Destreza is a way of learning how to be really, really good at using a sword. It's like playing a game where you try to beat your opponent by using your sword skills in a smart way.
In destreza, you learn fancy moves and tricks, but you also learn how to think ahead and figure out what your opponent might do next. It's kind of like playing chess, but with swords instead of chess pieces.
Destreza is a way of sword fighting that started in Spain a long time ago. People who practice destreza wear special clothes and use special swords that are longer and thinner than regular swords. They also do a lot of practice and training to get really good at it.
So, if you want to be really good at using a sword like a professional, then you can learn destreza!