Warwick Jungle

So i have played 2 games where warwick went god mode, just no one could kill him and he alomost one shot me with his ult and deathfire grasp and i was the tank. I fear warwick is gonna be too strong this season in the jungling ranks. Now you mnight think "oh 2 games thats not a big deal" but those 2 games i noticed a very commom thing, the build was the same and the level of just absolute power and shutdown he had was crazy, no one could 1v1 him let alone 1v3 him. The on hit effect from the jungle items were just insane. Now i love ww jungle he was was in season 4 but if i messed up i payed for it with a death, this one however is just too strong that evgen if he did mess up he would get most of his health back from how fast he could auto and from his Q. I dont want ww nerfed this season because i love playing him but something needs to be done, either "tweak" (not nerf) Warwick, the items or tweak it so he doesnt get so much from his on hit effects.