“Okay. I can do this. It’s controllable,” I talked myself into pretending that I knew what I was doing. “Right. I’m the wizard here. I’m the big, important horsey-mage, so my horn has to listen to what I say. I can do this. Just like Luna said: vigor.” My horn ignited mightily, and in response the rock turned nearly black and began vibrating in preparation to explode. “Nope! Luna’s wrong!” I shut the spell off right away. 