Pros
Great ganks
Great late game damage
Still has her supporting capabilities

Cons
Succeptable to counter junging
No one will take you seriously
That will probably make it hard to gank them

Jungle Janna looks like AD janna but is NOT. With the devourer and blade, her mixed damage makes it hard for anyone to see where she is coming from. She deals damage completely off a "per auto attack" type setting. Devouver is applied per auto, blade is as well, and so is the bonus ad from you shield. With this in mind the guide centers around an attackspeed heavy janna that kites so well she can get off every auto possible.

Will be adding a more detailed explantion of how to play her and what to watch out for if i start seeing upvotes, and seeing people actually trying this build. Thanks for viewing!