Warrior ability · learned at level 10 · Physical

Bloodrage

20% of base Health

Instant1 min cooldown

Generates 10 rage at the cost of health, and then generates an additional 10 rage over 10 sec.

Game files · build 1.60.1.70245Read from the WoW Forever beta client, build 1.60.1.70245.

Compared with Classic

Classic tooltip

Generates 10 rage at the cost of health, and then generates an additional 10 rage over 10 sec. The warrior is considered in combat for the duration.

What Blizzard said about Bloodrage, each line checked against the files.

Matches the files
New Talent Gore Drinker in Row 6 of Fury, requires the Enrage talent. Your Enrage, Berserker Rage, Bloodrage, Death Wish, and Bloodthirst abilities cause your next 3 melee attacks to restore 0.5/1% of your maximum Health.
The files The Oct 2 server hotfix (read from the 70245 client cache): Gore Drinker (1323967, 2 ranks) is in Fury row 6 behind Enrage (edge 136735); its buff has 3 charges and its heal curve is 0.5/1%. Berserker Rage, Bloodrage, Death Wish and Enrage gained a shared class flag for it.
Gore Drinker Gore Drinker Gore Drinker Berserker Rage Bloodrage Death Wish Enrage Development Notes, October 1