[Sanctified Wrath] increases critical strike chance of Hammer of Wrath by 6%, cooldown of Avenging Wrath by 60% and allows use of Hammer of Wrath at all times while under the effects of Avenging Wrath.
This ability essentially places the Paladin at a higher DPS bracket for the duration. It suits Retribution Paladins best due to their already relatively heightened damage abilities, but is useful in PvP and PvE alike as a way of causing huge burst damage in a small amount of time. This spell itself does not trigger Global Cooldown, but is, unlike Judgement, affected by it. Also, Protection specced Paladins also make much use of this skill to gain a high lead in threat or reinforce their threat lead over the DPS.
Is dispellable and easily recognized by enemy players due to the giant golden wings protruding from the Paladin's back, and thus should be used with caution around Shamans (Purge), Priests (Dispel Magic or even Mass Dispel), Warlock's Felhunters (Devour Magic), Warriors (Shield Slam - in the off chance they manage to pull out a shield within the duration and even happen to carry one in their bag), Hunters Tranquilizing Shot, and worst of all, Mages (whose spellsteal can give them the great benefits of this spell, making them even more powerful). Therefore, think before you use this spell, and time it correctly. If you are fighting a Shaman, Mage or Priest one-on-one, make sure you cast it the right time (could be when the target is affected by Hammer of Justice. Make sure the target has used any stunbreaking cooldowns or trinkets etc. The result, when timed right, can be deadly).
Because of its powerful boost and well-known visual effect, Avenging Wrath of often just referred to as a paladin's "wings". For example; "he used his wings, so the other guy was killed in two seconds".