Weve seen Damien Darhks powers used at times throughout Season 4 so far, and the guy is a seriously scary prospect for Team Arrow. Seemingly not for Thea Queen, though. Part of Darhks mystical powers allow him to literally sap the life out of a person, and hes even given Ollie a scare with this particular skill. So when he attempts to do the same on Thea, things dont look good for Speedy. Well, that is until it soon becomes apparent that Darhks powers dont work on Thea. Seemingly tied to the whole bloodlust thing, for whatever reason, Thea is apparently invincible when it comes to Damiens dark ways, which should make her a key part of how Season 4 moves forward.