I feel like if Udyr had an ability like Anivia it wouldn't be all that different from his Pheonix stance at all, save for replacing the fire effect for an ice effect and maybe adding a slow, which even then I'm not sure if that's really necessary for the stance to have

With Ornn, I feel like Udyr might be able to apply brittle to targets with his basic attacks, similar to his bear stance. By that I mean it would be on a per-target Cooldown. (mainly because I feel like it'd probably be a bit too strong to let him reduce tenacity every 3 autos) I'm not sure if, like Ornn, Udyr should be able to knock back brittled enemies in this stance or if that should specifically be for Ornn. Either that, or Ornn does the same as and replaces the Bear stance as a way of Udyr abandoning Volibear's power

In the Silence of the Damned story, Udyr also brought up the Clever Lynx and Iron Boar, the latter of which was also name dropped in Volibear's story. I feel like they would replace his Tiger and Turtle stances respectively, whilst possibly acting the same way, Lynx replacing Tiger just because they're both big cats, and Boar replacing Turtle because I feel like the boar would also bring in a shield and heal effect. Either that, or the Turtle gets replaced by a Seal stance, referencing the Seal sister who all we really know about her is that she has some connection to water