That was an amazing story for being less than 1,000 words long! It could also be used to start a much longer story maybe a prequel or a sequel. Have Xan go to the SGC and help them with them knowing he is an immortal, or what happened to him after he and Methos kicked butt all those years ago. You have a great many ways you could manipulate this or you could just be happy with it as is! It takes a great writer to tell a story that makes the reader envision a realm of possibilities beyond the already written tale! The imagination is a powerful tool and you have utilized it greatly!!