Lash of Slaanesh is a direct damage spell with a range of 24". Extend a straight line 24" in length, within the caster's forward arc and directly from his base. Any model whose base falls under the line (determined using the line template) suffers a Strength 4 hit with the Armour Piercing (1) special rule. Any unit that suffers a casualty from this spell may not march in its next Movement phase.