Jungle Leona is back.

Omnistone. Cinderhulk>Mobis(or defensive boots if you have too)>Gauntlet

Very easy to play. Only advice you need is, generally always start blue side(Because she cant healthily do the first clear of Raptors/Krugs at lvl 2). So, clear looks like....Full blue side clear>gank or red>scuttle or red>recall(Now that you bought red smite, you can clear any camp easily)

No you wont get counter jungled, her clear is just as fast as anyones, and she isnt a push over in 1v1 scenarios in the jungle.

also, what i find VERY helpful on her is that if you're playing from behind, which happens alot due to the nature of jungle this season, she can still build pure support from the jungle, so like Knights Vow, and Locket. Very cheap items to compensate for the lack of gold associated with playing from behind.