A Knight Commander with Sonnsthal and Holy Icon in a unit containing a Prelate or Preacher, and near a Arcane Engine (forseeing) for Lightning Reflexes is downright nasty.
4 WS6 attacks with +1 to hit and rerolling to hit, wounding automatically, ignoring armour and forcing the opponent to reroll succesful wardsaves.
@Porkix - And they (flaggies) will get buffed in the update as well.
They're better than we're used to since 7th and 8th, but they are still frenzied on Ld6 (so need a babysitter) and can't provide hatred to themselves anymore (which is countered by the fact that Prelates and Preachers can join them now.)