So I have been playing Udyr for the past few seasons and in the most recent patches with new runes he is a beast . You need to have good map knowledge , know when to engage and when to run .

You always want to start with bot side buff , then wolves , then the other buff and now you have 3 options :
A) Gank top or Mid
B) Gank Bot or Mid
C) Invade enemy buff to hopefully get first blood ( what i ussualy do )