Consume Magic

Consume Magic is one of the racial abilities available to Blood Elf Priests. It allows the priest to consume a priest buff on themselves in order to regain mana. This is very useful as part of your 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've 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.