Okkam's Mindrazor is an augment spell with a range of 18" and lasts until the start of the caster's next Magic phase. Models in the target unit use their Leadership instead of Strength when rolling to wound with all close combat attacks whilst the spell remains in effect (any Strength bonuses from weapons are ignored). The Wizard can choose to extend the range of this spell to 36". If he does so, the casting value of Okkam's Mindrazor is increased to 21+