Or just rework udyr in general so hes not either extremely toxic to play against or just weak and useless. (Basically increase his micro, give him more power but also give his enemies counterplay)
Let him have 2 abilities out at once, he activates turtle and one hand goes out to reduce incoming damage from a direction (but it stays relative to the direction hes facing,
so if he is trying to auto someone down while their teammates are trying to help he might have to put the shield up to his left but he may expose himself if he turns around and runs.
then have his other hand catch on fire when he activates phoenix (aoe dmg on autos, maybe healing him for the damage done so he is rewarded by hitting multiple enemies, idk use your imagination), people will literally spend hours trying to come up with the best combination to have out and it will be like ryze when he was reworked and everyone got excited over his combos...
And like the other guy said, right now phoenix is just for the high base dmg and going full tank although I can see how even phoenix can be scaled with more than just defensive stats,
into tank items and ravenous hunter might be really good but situational.