Prerequisite: Molefolk
Your claws become tougher and are better built for tunneling. You gain the following benefits:

• Your burrow speed increases to 15 feet.
• Your claws deal 1d6 slashing damage instead of 1d4, and they count as magical for the purposes of overcoming damage resistance.
• You deal double damage to objects and structures with your claws.
• You can burrow through stone at a speed of 5 feet, which does leave a tunnel.