The Technomancer
card-carrying scientician
The problem is that you have to have it "on" or "off. You can't go halfway, and it becomes useless text in most blocks that don't care about tribal.
I don't think that's as much of a problem: the reason they don't do it anymore is because its inconsistent with the first 12 or so years of the game. Having it be on is fine, since outside of non-tribal blocks you're only going to have a handful of flavored tribal cards every set anyway. I mean Tarkir would have what, like four Tribal Goblin cards?
Its not in the text box and it mostly goes on card types that don't normally have other subtypes, so text room isn't really an issue