At 7th level, as a swift action, a student of stone can spend 1 ki point to gain DR 2/magic until the beginning of his next turn. At 10th level, he can spend 1 ki point to gain DR 2/chaotic until his next turn. At 15th level, he can spend 1 ki point to gain DR 5/chaotic until his next turn. This ability replaces high jump.
