|The subject of this article was removed from World of Warcraft in patch 3.0.2.
Improved Seal of the Crusader is a talent in the Retribution tree, you will need to spend 8 points in Retribution to max it.
This talent is the main utility of Retribution Paladins. Not only does the normal Judgement increase the Paladin's damage, but the increased critical strike chance greatly increases the entire raid's damage output as well. Considered a "must have" talent for all Retribution Paladins.
In Patch 2.3, the previous benefit of this talent (increases the melee attack power bonus of your Seal of the Crusader and the Holy damage increase of your Judgement of the Crusader) was rolled into the regular Seal of the Crusader and this talent took on the benefits of the removed Sanctified Crusader.
See Paladin Talents for more details.