Tempest is a direct damage spell. Place the large round template anywhere within 30" of the Wizard — it then scatters D6". All models hit by the template suffer a Strength 3 hit (models with the Fly special rule suffer a Strength 4 hit instead). If a unit suffers any unsaved Wounds from this spell, it suffers a -1 modifier to all To Hit rolls (both shooting and close combat) until the start of the caster's next Magic phase (shooting attacks that do not use Ballistic Skill must roll 4+ on a D6 before firing, or the shot(s) area lost).