Heroism

Heroism is a shaman buff. The Alliance version is Heroism, and the Horde version is Bloodlust. They are exactly the same aside from their name and the names of their associated debuffs.

It is learned at level 70 for.

Talents
Talents that can improve this ability:
 * Mental Quickness

Tactics

 * The most common use for heroism is during bosses in raids. When it is used varies from boss to boss and guild to guild. When soloing, it can be useful for crunch situations or tougher mobs, such as targets for group quests.
 * As part of Blizzard's new movement toward "bring a player, not a class" raid compositions, 4.0.1 endowed mages with a similar effect, Time Warp, and Beast Mastery hunters with core hound pet gained Ancient Hysteria.
 * When Heroism is used in raids, it is usually good idea to dump all other CDs you have (Avenging Wrath, Rapid Fire, Arcane Power...) at the same time, because in many cases it will result higher overall damage than using the cooldowns separately.