Viciousness (passive) – Increases critical strike chance by 1%.Darkflight (3 min cooldown) – Activates your true form, increasing movement speed by 40% for 10 sec.It’s not a huge deal, but worgen has some nice racial abilities that you may take into consideration when selecting a worgen class. Do you care if your character looks stupid? How important is roleplaying to you? How big an impact do the worgen’s racial abilities have on class selection? Read on to learn what’s important when choosing a class for your worgen character in World of Warcraft’s Cataclysm expansion. There are several things to take into consideration when choosing a worgen class.