Source: Unearthed Arcana 8, Ranger

By following the path of the Guardian, you protect the natural world from creatures that would despoil it, even as you engage with the common folk who rely upon nature’s bounty to survive. You patrol the pathways through the wilds, keeping them clear of bandits and rampaging monsters, even as you keep careful watch on how civilized realms interact with the wilderness. Those who take more than their fair share—clear-cutting forests or hunting for sport rather than survival—risk your wrath.

When your spirit companion manifests, it takes the form of a brown bear.

Guardian’s Shroud

Your companion spirit helps to protect you and the creatures closest to you. As a bonus action, you invoke your spirit companion and choose yourself or an ally you can see. The chosen creature gains temporary hit points equal to 2d6 + your Wisdom modifier.