Choking Gas

Acquisition
Skill Quests: Skill Trainers: Signet of Capture:
 * The False Gods (Temple of the Ages)
 * Bartoch (Droknar's Forge)
 * Dakk (Ember Light Camp)
 * Cella the Hooded (North Kryta Province)
 * Melp the Harpooner (Watchtower Coast)