Nope, these two are completely separated, the spirit attack is designed to be a range attack, he has used this ability to eliminates a target who is 7 feet away.
If I recall correctly, the Decoy ability creates a fake clone of the individual and is used to distract enemies. Hence why the non-glowy (fake) Cole seems to be standing around like a lemon whilst the glowy Cole (real, possibly using a sustained ability to give him those glowy shaders) uses the distraction to get in a backstab.
The Decoy ability is also unique to rogues, so I think it's still a fair interpretation of that image.
EDIT:
After watching the video, I think it must be one of the four abilities shown in Cole's UI - one is Twin Fangs, one is Flank Attack, one is unknown (could be a sustained ability like 'Speed', or an activated ability like 'Throw Knives') and the last one is unknow but also red, which suggests it wasn't available for use at that time.
Looking at Flank Attack's description- "you leap through the shadows to attack your foes with deadly strikes that hit them from behind" - I think it could be that. However, that ability became available for use again almost instantly, so either it has a *very* short cool-down, or it was another ability instead.
Modifié par XMissWooX, 18 septembre 2014 - 12:35 .