He couldn't use magic or his mind because it will be considered cheating. It is physical training so he can't use magic, and his mind will first reject the illusion he is in if he attempts it. That will cause a ruckus. He had to use his brain in tangent with his body to figure out a solution. He looked around for what he could use to kill them. His new safe zone is bare, unlike the forest.
"There's nothing here but stones, weeds, and my trusty buckler. How can you kill something with stones..."
He laughed when he realized how easy it was. He had stones littered about him. They are natural ammunition. Even the slow rock people think so too.
"Will need something to carry them with." He thought out loud.
