Rewards of Treachery
(Rule)Description: Add one additional Battlefield Role Slot to the Detachment that includes the Unit selected to fill a Prime Force Organisation Slot with this Prime Advantage. This Slot may be of any Battlefield Role other than High Command, Command, Warlord or Lord of War (note that a Detachment may gain more than one additional Force Organisation slot if this option is selected for multiple Units in the same Detachment).
Each Unit selected to fill such a Slot must:
• Be from the Legiones Astartes Army List.
• Not have the Alpha Legion Faction Trait on their Unit Profile.
• Not include any Models that have the Unique Sub-Type.
All Models in any of these Units have their Faction Trait replaced with 'Alpha Legion'.