So, it's a situationally better Tenacious Dead, right? Well, at least in my view it is. It's a more expensive bear with a couple of cool abilities. In the later game, you can pay the WW to bring it back to the battlefield after its blocked (since it has Vigilance, it can pull double-duty). The only real thing that I don't like is that it requires Threshold in order to activate its second ability. Other than that, it's pretty good for a 3-drop.
Pros: Better regeneration
Cons: Threshold required