At the start of each round of close combat in which they are fighting, models with this special rule (the dancers) choose one of the following dances, the effect of which lasts until the end of that turn or until a new dance is chosen. This is done before Impact Hits are resolved. All dancers in the same unit must choose the same dance. Dancers cannot choose the same dance in two consecutive rounds of combat.
Whirling Death: The dancers have the Armour Piercing and Killing Blow special rules.
Storm of Blades: The dancers have +1 Attack.
The Shadows Coil: The dancers have a +3 ward save.
Woven Mist: Enemy units in base contact with the unit receive no combat result bonus for extra ranks.