This includes items and quests that can no longer be obtained.
The in-game information in this article is kept purely for historical purposes and should probably not be under any other categories.
Improved Holy Concentration
Increases the chance you'll enter Holy Concentration by X% and also reduces the base cast time by Y% for the next 2 Greater Heal, Flash Heal or Binding Heal spells after you gain Holy Concentration. Lasts 20 sec.
Reduces Greater Heal, Flash Heal, and Binding Light cast time by Y%.
Duration: 20 seconds
Increases the chance you'll enter Holy Concentration by X% and also reduces the base cast time by Y% for the next 2 Greater Heal, Flash Heal or Binding Heal spells after you gain Holy Concentration. Lasts 20 sec.
Improved Holy Concentration was a priesttalent in the Holy tree, available after spending 3 talent points in Holy Concentration and 40 talent points in the Holy tree. It increased the chance to enter Holy Concentration and reduced the cast time of the next two Greater Heals, Flash Heals or Binding Heals for 20 sec. after you gained Holy Concentration.
Edit
Patch 3.1.0 (2009-04-14): Removed from the game. 
