I'm fairly experienced with Katarina mid lane, however I'd like an open opinion on whether or not Katarina is a viable jungler with reasonable sustain. I've already seen that her ganking and movement abilities are superb, however what about her jungling? I'd like your guys' thoughts.
With correct runes+masteries every champion can jungle. Just some are easier to invade than others, each have different clears and some can gank/dive well, and others can't. It ultimately depends on you and your opposing jungler.
Jungler here.
Ganking is a combination of CC + Damage. She only has half that equation.
Also, sustain? What sustain?
Below average for sure, but literally anyone can be jungled.
her ganks are poor pre 6 damage wise, she has rough clears, and brings no CC. I wouldn't take her into the jungle
Can she? Yes. She's not a top tier pick for the jungle though.
Nearly every if not every champion has the capability to jungle.
Katarina would be a lower tier jungler because her jungle clear is sub-par, has no hard CC, and somewhat squishy so sustain is not high.
I have gotten fed as Katarina and tried jungle, and even with all the AP I had accumulated, neutral creatures still die at a relatively slow pace, but it's not TOO terrible. She isn't all that when it comes so soloing dragon as well.
She is has no crowd control whatsoever, so when it comes to ganking, all she can bring is damage. Since she brings no CC and is squishy herself, CC can and will shut her and her ganks down easily.
The thing is, since she is commonly picked mid-lane, and when mid-laners have the opportunity to roam, it can cause havoc if they manage to get a few kills up, and if she does, you will pretty much be deleting someones health all together early game and possibly mid game all if the enemy champions don't itemize or are not too tanky.
A well fed roaming Katarina, jungle or not will not be pretty for the opposing team, but if she doesn't get a few kills , assist, or clears in, she will fall off in her ganks unless the opposing team is having a bad laning phase.
Late game, it will just be as if she was playing mid-lane and will play as the clean-up after team fights
She has no resources, and great mobility so that can be a + I suppose. Despite all that, Katarina may be a lower tier jungler, but would be fun regardless. Of course, you may need specialized runes as well.
Well turns out 
can jg just fine so i'm sure there's a way to make kat jg work.
i think u max w first
