This is an example of Mime magic. The wall has DR 24 and 4 HP per yard.

Innate Attack (Crushing) 8d [64] 
    Area Effect (2 yard radius) [+50%] 
    Persistent [+40%] 
    Wall (Rigid) [+30%] 
    Extended Duration (x3) [+20%] 
    No Signature [+20%] 
        Invisible wall 
    All-Out [-25%] 
        Mime box performance 
        Must follow wall from end to end 
    Temporary Disadvantage (Absent-Mindedness) [-15%] 
    Terminal Condition (Caster Speaking) [-10%] 
    Magical [-10%] 
    Spell Components [-40%] 
        Must gesture with hands (Mime box performance) 
        Must wear a beret 
        Must wear white make-up on face 
Level 2 [92] 
    Increase Area Effect by 1 step [+50%] 
    Increase Extended Duration by 1 step [+20%] 
Levels 3-5 [120/148/176] 
    Increase Area Effect by 1 step [+50%] 
    Increase Extended Duration by 1 step [+20%]