You've been chosen by a renegade mad scientist from the future to test her greatest invention, as she is not currently able to do so herself. The Reversal Ray... a nearly omnipotent device capable of reversing your chosen property of anything you shoot with it, literally or figuratively...

Want to make an 81 year old man young again? Reverse his age with a single shot and he'll be 18. Want to make a short woman tall? Just shoot her with the reversal ray and make her tall. Want to wipe out all life on earth? Just shoot the earth and reverse the earth's rotation!

The possibilities are limitless... but expect the Temporal Regulation Bureau to do everything they can to stop you!

And don't forget... any weapon has weaknesses... it would be a good idea to find out yours before your enemies do!