If a tornado damaged or destroyed your home, yard, or out buildings, you CAN undo the damages. The tornado must be returned to the location of the damage, and it's rotation must be reversed. As long as the tornado is operating at the same exact speed, in the exact same path, and the rotation is reversed, all damage will be undone. For example, if your house was demolished, it will be reconstructed just as it was before the storm, and the trees that fell will be standing upright once again.
This works on the same principal as when someone hits your car while driving forward. If you can get them to hit your car in reverse at the exact same speed and location, the damage is undone. This should always be done before calling the police unless someone dies during the accident, because it's been determined that a reversed accident will not unkill a dead person.
The trick is getting the tornado reversed. It takes special scientific engineering to make this occur. Please consult with your local tornadic professional for advice.