Protective Spirit

Acquisition
Skill Quests: Skill Trainers: Signet of Capture:
 * Prophecies
 * Blood And Smoke (Ettin's Back)
 * Prophecies
 * Tengsao (The Amnoon Oasis)
 * Dakk (Ember Light Camp)
 * Firstwatch Sergio (Lion's Arch)
 * Factions
 * Zhao Di (Shing Jea Monastery)
 * Nightfall
 * Tohn (Kamadan, Jewel of Istan)
 * Prophecies
 * Yerk Plopsquirt (Nebo Terrace)
 * Muga Riptide (D'Alessio Seaboard (Mission))

Trivia

 * The icon is probably Buddhist iconography.