Claws of Digging

You transform one willing creature’s hands into thick, wide claws that enable it to burrow through earth and stone.

The creature can burrow through earth at a rate equal to its land speed, and through rock or stone at one-quarter of that rate.

A creature that burrows through stone leaves a tunnel behind it. If it burrows through soft earth, the tunnel fills in behind it (with earth excavated from ahead of the creature) unless the creature slows down to half speed.

In addition, the creature’s unarmed attacks do 2d6 slashing damage. The claws are considered adamantine.