At the start of each Assault phase, if a unit that includes at least one model with this special rule has any models within 6" of a friendly model with the Legiones Astartes (Sons of Horus) special rule that has a Weapon Skill characteristic of 5 or more, all models in the unit with this special rule gain the Rampage (1) and Furious Charge (1) special rules until the end of that Phase.
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