Over time, the Blood Knights have become a macabre parody of the noble knights they once were, toying with their foes mercilessly in one-sided duels to the death.
Every model in a unit of Blood Knights can issue and accept challenges in the same manner as a character. However, a unit with this special rule cannot refuse a challenge – if a challenge is issued and a model belonging to this unit could accept it, a model belonging to the unit must accept it.