Burrowing
Innate, Move, Trait
Cost: 2 XP/tier
You have a 5 foot burrow speed/tier through soft earthen material like dirt, mud, or sand. You can choose to leave tunnels or not at your discretion.
Earth Glide (+1) Your burrowing speed becomes Earth Glide allowing you to move through even solid material like rocks and stones with a hardness up to your half Brawn modifier or less, though you treat such terrain as difficult terrain.
Sonic Liquefaction (+1) You can emit subtle sonic frequencies that cause the earth around you to behave like liquid. While burrowing in particularly soft material like sand or freshly dug dirt or powdered stone, your burrowing speed doubles. This adds the Sonic type to this feat.
Tunneling (+1) If you move at half your normal burrow speed, your burrowing leaves behind a tunnel equal in size to you. These tunnels collapse after 2 hours. Applying this a second time increases this to 24 hours.