Double barrel does exactly that with 20%. I don’t see any mention how long it last and how many time it stack if any though
Zane’s main problem is a lot of his skills are doing the same thing or doing the same thing but worse and his skill mostly focus on utility that you don’t need. He also lacking severely in damage increase skills
He has a lot of skills that only trigger after a condition is met like shooting through barrier/barrier take damage/moving while shooting/ getting a kill first/ having action skill activated…Seeing red trigger all kill skill with a press of button? Well, other characters they have them as passive that work all the time while you have to invest to the final skill just to have a few seconds kill skill buff. Playing dirty give 5 shots after a kill to have a chance to fire additional projectile while Fl4k’s Two fangs give less percent but usable for any kind of guns instead of having to swap to high damage per shot weapon. Same thing with the first shot condition for Duct tape mod. It would have been acceptable atleast if they are guarantee 100% but no. I would rather have 5s to fire additional projectile and a grenade every 8s instead. By then he will just might come closer to other characters in term of dps.
At the moment, he has 6 skills involve restore health, 5 skills involve recharge shield, 4 skills involve action skill cooldown and duration (doesn’t count Almighty Ordnance and Doppelbanger for SNSTL and digi-clone specifically). Calm, Cool, Collected by itself can do all the things above which make the other skills usefulness questionable at best. A lot of skill with a lot of ways to recharge shield while with Amara only one skill Mindfulness you have greater movement speed and shield recharge and only have to take damage (which she always does), or just Shield reboot in Guardian rank