Ravening Madmen
(Rule)Description: Any model making a To Wound roll in the Assault phase against a unit composed entirely of models with this special rule reduces its Strength by -1 when determining the score required To Wound (this does not affect the attacking unit's Strength for the purposes of inflicting Instant Death). Additionally, any To Hit rolls made in the Assault phase targeting a unit that includes one or more models with this special rule, always count the majority Weapon Skill of the target unit as 3, regardless of the actual Weapon Skill of the models in that unit.
A unit that includes models with this special rule may only be joined by models with this special rule, or the Primarch Angron, and models with this special rule may not join a unit that includes any models without this special rule.