Hydran Exemplars
(Rule)Description: The controlling player of a unit composed entirely of models with this special rule must select any one variant of the Legiones Astartes (X) special rule other than Legiones Astartes (Alpha Legion) at the start of the battle before any models are deployed. All models in the unit with this special rule gain a bonus of +1 to all To Hit rolls made against models with the chosen variant of the Legiones Astartes (X) special rule.