Blessings and Auras
Blessings are 10 minute buffs that you place on players (30 minute buffs for the later level raid versions) that grant solid bonuses include aion kinah. You are able to put one blessing on each player in your group or raid. If using the high level raid buffs it is one buff per class. Using the proper blessing is critical and sometimes complicated. As a basic tactic you should apply them as follows:
Blessing of Might - Hunters, Rogues, DPS Warriors, Enhancement Shaman, Feral Druids, Retribution Paladins, Death Knights
Blessing of Wisdom - Priests, Shaman, Mages, Restoration Druids, Holy Paladins, and Warlocks (if you do not have Blessing of Kings)
Blessing of Kings - Tanks of all Classes, Warlocks, and any other class that already has one of the above or that will be taking damage
Blessing of Sanctuary - Protection Paladins that are over geared for content and are having mana issues
Blessing of Kings is sometimes preferred over Blessing of Might or Blessing of Wisdom. If you have Blessing of Kings (which is a talent) then you should ask what each person in the party prefers.