A player of mine has decided to play an amber wizard, and while I have no objections, I've never played one myself or GM'd one, in either of the two editions...
So first up, he chose to make him very tough, to symbolize him having lived in the wilds for several years, so 5 toughness... I have no problem with that, but do wonder how you would rule what happend when he transforms into a Black Wolf.
I'm tempted to let him keep his 5 toughness, and make a general ruling that when transforming, physical stats can be up to one higher than the form dictates (if the char has higher stat of course), and make it show in the form. So for his wolf it would be somewhat bigger, and look battlehardened. Thus when he learns raven/crow form, it'll be with +1 toughness, but not the full 5 toughness.
How does that sound?
Also he decided not to have education, so for one I've thought about removing the "academic" part of App. Wizard career, and exchange it with "rural".
And also thought about how he learns new spells. Does he need to read them from a grimoire, or would it be acceptable for him to learn them from the nature of the amber wind? Of course paying the same amount for them...
He's by no means a powergamer, so I'm willing to go far to "model" the class to portraying a "wild man", in touch with nature. So completely exchanging education with nature lore, or resilience would seem fine to me.
The whole roleplaying aspect seems like it will out fine, he knows he'll feel awkward in bigger cities (said to him, that if it has a stone wall, then it's a city...), and will also slowly feel more and more like the beasts he "mimics", untill he's more beast than man (the last he saw of his master, was him transforming into a wolf for the last time, and go into the forest to live with the she-wolf he had fallen in love with), but that it takes time.
So he'll kinda be fighting against the urge in him to use the magic, and the fear of becomming more beast than man.
Funny, I've never seen amber wizards as much fun to play, but can see much potential in this.