It's over here.
For some bloody reason there are no decent guides on where to find this thing sure there are some but they all just say: ah it's in the tutorial place with the wolf thing. Like have you seen that place on the map? It's bigger than your average mom! It's like these people are deadly allergic to a straight answer.
It's Over Here
It's over there in the obvious red circle.
There now you know where the regenerate ability is. Have fun not dying, you're welcome.