Since this CB focused loadout is mainly focusing on healing, dr and prowl cd reduction, you're gonna have a hard time if you don't prioritize Cauterize and Nimble (since it doesn,t have at least a lvl 3 Chase).
You can mostly ignore green items except if your healer isn't that good, then I only recommend K2H.
And by the way, don't miss your shots!
Enjoy!
Edit: This is the only viable loadout that works for me in Ranked games, sure RG can be good but it's just risky and I recommend only using it in Casuals/Customs.

Sixth Sense
Pounce
Reduce your damage taken by 20% for 2s after using Pounce.
Level 5

Patch Up
Nine Lives
Heal for an additional 160 with Nine Lives.
Level 2

Predation
Armor
Reduce the Cooldown of Prowl by 0.8s each time you hit an enemy with a dagger.
Level 4

Street Cred
Armor
Increase your maximum Health by 50.
Level 1

Walk it Off
Prowl
Heal for 80 every 1s while Prowl is active.
Level 2

Cat Burglar
Prowl
Increase the damage of each of your daggers from your first dagger sets within 5s of Prowl ending by 30%.
Level 2

Level 3

Nimble
Armor
Gain 21% Movement Speed.