Pillar of Life

You conjure a pillar of positive energy in a single 5-foot square within range that radiates light as if it were a sunrod. Living creatures adjacent to the pillar can spend a standard action to touch the pillar and heal 2d8 points of damage + 1 point/caster level (maximum +20). Creatures can move into the square containing the pillar, but if an undead creature moves into the pillar it takes 1d6 points of damage/caster level (maximum 10d6). Undead creatures vulnerable to bright light take 1d8 points if damage/caster level (maximum 10d8). A creature cannot benefit or suffer more than once from a single casting of this spell.