Blessing of Soil

Just beneath the skin, coiling up over the wrists and forearms as dark spiral whorls and branching root patterns, the still-damp soil of the tangled fane has given a boon to a favoured creature.   While blessed, you may merge with the earth and move smoothly through it, gaining a burrow speed equal to half your walking speed. You may burrow through nonmagical, unworked earth, mud, sand and stone. While doing so, you do not disturb the material you move through. While within the stone, you have full cover from creatures outside it, do not need to breathe, and cannot see but make perception checks to hear and feel normally. If you end your turn submerged in the earth, you are safely ejected to the nearest surface, unless you concentrate on the blessing as if it were a spell.