While the magic of Christmas Tree can grant wishes, it does not possess the ability to bring dead Christmas lights back to life. However, there are several steps you can take to try and revive them. First, check to make sure the bulbs are screwed in securely. If they are loose, tighten them. Next, make sure the cord is not damaged or frayed. If it is, you may need to replace the entire set. Finally, try replacing the fuse in the plug or using a different outlet. With a little bit of troubleshooting, you should be able to get your lights working again.