Only a single unit in a Questoris Household Detachment may be upgraded to have the Seneschal rank, and an Acastus Knight Porphyrion or Acastus Knight Asterius may not be given this upgrade. A model with this upgrade gains the Character Unit Sub-type and increases its Weapon Skill and Ballistic Skill Characteristics by +1. In addition, if the Questoris Household Detachment is the Primary Detachment of the army, then a model with this upgrade must be chosen as the army’s Warlord. If selected as the army’s Warlord, a model with this upgrade automatically gains the Master of the Household Warlord Trait:
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