Bone Wall

     A spiritual wall of bone 10 feet high, 6 inches thick, and up  to 5 feet long per level appears anywhere you choose within range. The wall won't appear in a space occupied by creatures or objects---these will be on one side of the wall or the other, as determined by DM. The wall has hit points equal to 1d10 per caster level, to a maximum of 10d10 hit points. The entire wall crumbles to spiritual dust when it has taken the maximum amount of damage it can sustain or when the spell duration ends.