Does anyone else think that this is USELESS? I don't see any use for it unless you want to undo your last few steps.
I used it few times when I played the beta for the first time, then after I posted this... I was playing more. I saw more people using it. I basically saw someone dying and then using the ability after the kill, so basically you'd have to kill them twice. I gained a lot of understanding when I saw that happened.I think there are other specialties much more useful than it. I can see if you come around a corner into 3 enemies, you can redo it. That's the only situation I'd see it being helpful though.