Ward of Dawn with Armor of Light and pretty much any shotgun. They immediately change course and come right at me. And then get two shotgun blasts and a melee. I haven't been killed by a Bladedancers in my bubble for at least a few months now. If I'm using Striker instead, I just use Fist of Havoc. If I don't have a super ready, I either try to snipe them, use a rocket launcher, or I just run for a bit, turn around, and then kill them.