How to stay invincible in mobs?

Nice discussion this turned into.

In any case... Using invulnerability frames in mobs doesn't seem to exist as an ability anymore. There's simply not enough time left on Screw Punch to keep yourself untouched. You could keep doing Screw Punch → Barrage, but that's just about it. Even that has its faults. I've tried using Back Elbow, but unless you stay clear of all mobs to avoid touch damage or magic damage when you cast it, you'll get hit.

Ikr.

I feel like if it did things would be so much easier. You can do barr -> jump back -> CSB and remain untouched (the residual iframes on barr keeps you untouchable on the jump so you don't take touch unless it's a big target), but there are escape issues like i said. I can't do barr -> csb backwards because that would kill people. The only way i see how is to do BSB -> CSB but if i can do BSB -> turn around -> CSB and push the mob i don't see why the mob wouldn't be pushed if i did BSB -> CSB, making it not worth using.