TrinityCore/TrinityCore — pull request #9072 by Xanvial (2013-01-27 05:22:44+00:00)
Title: [4.3.4] Scripts/Paladin: Grand Crusader

Grand Crusader (http://www.wowpedia.org/Grand_Crusader_(paladin_talent))

Grand Crusader is a passive specialization ability for Protection paladins, available at level 50. This passive has a 20% chance of refreshing the cooldown on your [Avenger's Shield] when your [Crusader Strike] or [Hammer of the Righteous] deal damage to your primary target, as well as causing it to generate 1 charge of Holy Power if used within 6 seconds.

Currently, it doesn't reset Avenger's Shield when activated, and it can be activated using all melee spells.