The situation was that he came to my main Castle with his main hero, who had those dragons. He thought he would catch me off guard because it's rare for someone to come with their main hero and dragons that have immunity. In the heat of battle, he made a mistake. There were many possible outcomes, but as they say, haste makes waste, and he ended up making a fool of himself. :)

In the future, I need to be more careful and avoid making hasty conclusions.