Return of Reckoning

https://i.imgur.com/1wWeFic.jpg

A skill fitting for a brawler like a slayer but i honestly think it needs a fix especially with it being channeling 10 seconds,15 ap per seconds and a real low gain meanwhile doing so.

So when we can use this skill?When we are overrun by a melee train.So at those time you really dont want your hands full with retribution since there are always more viable actions to take or you mostly die under the pressure.SO what we can do ?

1)Remove the channeling part of the skill make us slayers activate it and take free action .( 1 min cooldown makes it fair enough)
2)Add some kind of defensive or offensive bonuses in it:
a)ability to parry even from behind for 10 seconds on top of damage,still channeling.
b)% 10 more parry bonus
c)some aoe procs around slayer on top of the current damage.

This skill is supposed to be lvl 40 skill and as much useless as Dragon Gun of WH.
The skill name,idea behind it is great but really is a very bad skill.

Thank you for your understanding and cooperation.

Declining for not following the format.