The ability to make yourself either warm or cold. This ability is great for when it's freezing outside but you really, really want to wear that cute dress you bought at the mall last week. Then all you'd have to do is change your own temperature so that you won't get cold. It can also be good for when you're in the pool but the water is freezing- then just make yourself really hot and then the pool water will feel great. People could possibly look at you strangely, but who cares! They're burning up in the 100 degree weather while you flaunting your new leather jacket and leather boots.