I saw this question asked by @8mefox although you didn't ask me heres your answer. Yes Raging Form can attack because with the Lord effect it says if you have a unit that isn't a Shadow Paladin it can't attack and although it would seem you can't since you have no rearguards your vanguard counts. So unless Raging Form changed to a different clan he can still attack. Well with that lets all continue to live in this golden age.