Now, If I wasn't so lazy I could probably find alot more info on this. But I was just thinking would this be good for say a hammer warrior? To zomm to the fleeing foes location and hammer bash/backbreaker him/her.
P.S I'm sure I saw another good Shadow Arts skill, but I can't remember it

EDIT : http://gw.gamewikis.org/wiki/Death%27s_Charge
Has a large recharge time. But shouldn't need to be used twice on the same person if you hit them enough
