Guild Wars 2

So I was making a build focused on those target Backstab crits from behind, and Pistol Whip hits and had a few questions:

1) Do +X% damage on next attack buffs get applied to EACH pistol whip hit, or just the first?

2) Any tips on actually timing signets to proc on the attacks you want? For some reason I keep wasting them on “auto attack” skills when I want to specifcally use it for my backstab or Pistol whip attacks.

I find that when I use the assassins signet, it triggers the backstab for me. Since backstab comes off your slot 1 ability, I can’t be certain if it’s simply engaging autoattack again, or the signet itself does the hit.

turn off auto attack and it works just fine