Consume Magic (priest ability)

Consume Magic was one of the priest racial abilities available only to blood elf priests. It allowed the priest to consume a priest-specific buff on themselves in order to regain mana. This was very useful as part of a priest's mana regen rotation.

Tips and tactics
Place a Rank 1 Inner Fire (or Touch of Weakness) on yourself, and then use Consume Magic. If the proper buff gets consumed, then you have just regained a good chunk of mana at almost no cost. However, it is advisable to not interrupt mana regen; instead, Consume Magic should be used in between casts.