This kit works well when playing as a midliner. Your roll boils down to map control and setting up 2v1s.
You swim a lot going back and forth in support of front and backliners. Ink recovery up makes sure you always arrive with a full tank to lay down serious ink. As a midliner you'll be inking a LOT and moving a LOT, so this ability really shines on this weapon.
Ninja squid gives you an element of surprise when forcing 2v1, or can mask your escape if you get into a bad match-up. A good combo is to drop toxic mist in front of you and then ninja away to safety. Also coming into a 2v1 by toxic misting the opponent first really helps your teammate in a 2v1.
Run speed helps with strafing and inking, and with closing distance to attack. Three "value subs" round off this kit, but you could probably put 9 points of one ability as I find that ninja+toxic mist makes super jumping out kind of redundant. So maybe a shiny of bomb defense up or ink resistance would do well. A run speed shiny is also recommended. Finally the special power up makes your hammer extra effective.
Enjoy!