Baldur's Gate : The Sword Coast Chronicles : NWN2 Persistent World

I think the forms already have it, so it won't add any direct power.

However, the feat is a pre-req for others (such as the grappling feats) which would mean that you'd need to take a useless feat to buy-in to those feat-lines.

The forms neither have nor need it, because they have creature weapons. I'm not sure shifters need any buffs right now, though? There's a lot of good builds for them, whether pure or partial.