This wall has DR 18 and 3 HP per yard.

Innate Attack (Crushing, Gaze) 6d [57] 
    Wall (Rigid, Shapeable) [+60%] 
    Area Effect (2 yard radius) [+50%] 
    Persistent [+40%] 
    Insubstantial Only [-30%] 
    Magical [-10%] 
    Spell Components [-20%] 
        Must say "spirit barrier" in Latin 
        Must gesture with hands 
Levels 2+ [+15/level] 
    Increase Area Effect by 1 step [+50%] 
Duration Level 1 [+6] 
    Add Extended Duration (x3) [+20%] 
Duration Levels 2-7 [+6/level] 
    Improve Extended Duration by 1 step [+20%]