I'm having a hard time reconciling the concept of a Ranger with that of an Tinker...a ranger, living on the outskirts of civilization, guardian in the wilderness, constantly on the move..but somehow has a workshop somewhere, and the tools and metalworking and chemistry skills to build a clockwork creature. I guess it is possible, just seems hard to reasonably backstory.
Is a bit overpowered, and the
is a real stretch...maybe repair minor damage in an hour, but reconstructing or changing its form is more likely in the days to weeks range.