Strong, but requires a snowball to stay viable.
Tbh, until feral flare gets nerfed, all aa reliant junglers are strong right now. Noc no exception.
More in depth, he has a good clear time, but his ganks suck until 6 and he brings basically damage to the gank. He's very item dependant, so if he doesn't farm well he won't be a threat in late game, and he has no escapes so he has to all in. It's a very risky skill set.
I'm personally not sold on him, but I recognize his strengths as a jungler.
SKT T1 Team splash (and bonus stuff in splash)