snarry games: Play the Game the effectiveness of the nicotine patch in helping Muggles to stop smoking. It was that article that gave Severus the idea. Instead of ingesting the potion, as had always been done, what if the delivery method was changed? A patch, applied to the skin, and the potion could continuously flow into the wizard’s system. Remove the patch, and within minutes, the wizard reverted back to himself. What a brilliant concept!!!