This spell entreats the Earth kami to hide and conceal the targeted creature. Earth flows up to cover the target with a realistic-looking facsimile of some natural object, such as a tree or a boulder; this shell collapses back into loose earth when the spell expires. The target can hear and breathe normally, but has no other interaction with the world outside of the concealing shell of Earth; if he speaks, moves, or is actually hit by an attack, the spell immediately ends and the concealing shell collapses as above. From outside, however, the false object will seem perfectly normal and will resist physical blows with the same strength it would have if it were real.
When creating the false shell, the Earth kami will try to choose an object that is appropriate for the area (such as a boulder on a mountainside), but they do lack imagination and in any case cannot create the false form of a manmade object – thus, the utility of this spell within a town or a castle is somewhat limited.