Healer's Boon

Acquisition
Signet of Capture:
 * Nightfall
 * Josinq the Whisperer (Resplendent Makuun)

Related skills

 * Divine Boon
 * Holy Haste

Trivia
Before the release of Nightfall, this skill was named Revitalize during the PvP Preview and Nightfall Preview Weekends.