Udyr power efficiency
Based on what i know the best way to use udyr is to start with Phoenix then turtle then bear then turtle and when you get them and completely ignore tiger. when i fight dragon i use phoenix, turtle, bear and repeat with mana potions and you should be able to solo with at least minimum 1200 health on first go. phoenix is a opening then i use turtle to heal after waiting 1 or 2 hits then i use bear for attack till phoenix no longer on Cooldown and repeat and you should barely lose health.
(alternative strategy for low level players.)