The default assumption of the damage on the below Innate Attack lines is to represent most weapon's maximum damage dealing capability. Thus, this can handle anything with a minimum ST of 23 or less. This should be more than sufficient for most non-giant-sized weapons. For larger weapons, a customized version of this spell (requiring the appropriate research and expense) with a higher damage potential is required.

Affliction [36] 
    Advantage [+273%] 
        Innate Attack (Cutting) 10d+10 [27.3] 
        Cosmic (Dismemberment) [+30%] 
            Any limb crippled is automatically cut off 
            Must Be Wielded (Anyone can use) [-30%] 
            Magical [-10%] 
        No Base [-100%] 
    Malediction (As Regular Spell) [+100%] 
    Based on Activation Roll [+5%] 
    Melee Attack (Reach C, No Parry) [-35%] 
    Only Works on Cutting Weapons [-60%] 
    Magical [-10%] 
    Spell Components [-20%] 
        Must say "dismember" in Latin 
        Must gesture with hands