This is an example of Mime magic. This spell encases the target inside an invisible box. Casting it involves making gestures similar to a Mime pretending to be inside a box, only the box ends up around the target instead. The caster can move around the target as desired, but can do little else for as long as they wish to keep the target trapped.

Binding 10 [16] 
    Engulfing [+60%] 
    Unbreakable [+40%] 
    No Signature [+20%] 
    One-Shot [-10%] 
    Melee Attack (Reach 1, Cannot Parry) [-30%] 
    Terminal Condition (Caster Speaking) [-20%] 
    Terminal Condition (Stopping the Miming) [-20%] 
    Requires Ready [-10%] 
        Mime Box Performance 
    Magical [-10%] 
    Spell Components [-40%] 
        Must gesture with hands (Mime box performance) 
        Must wear a beret 
        Must wear white make-up on face 
Levels 2+ [+8/level] 
    Increase Binding by 5 levels [+10 base]