Bloodthirst Talent

From wow.incgamers.com

Talent: Bloodthirst
Effect: Instantly attack the target causing damage. In addition, the next 5 successful melee attacks will restore 10 health. This effect lasts 8 sec. Damage is based on your attack power.
Statistics: Rank 2 and above is considered a skill, details of which can be found on the Bloodthirst Skill page.