I haven't seen it personally but Fool's Bane should be better in Wild because it can kill deathrattles. Clean kill on a Shredder for example.
You don't really need it. Warrior in Wild is STACKED with great options. Besides, who's gonna cut Death's Bite to run Fool's Bane?
I tried to run Portal in my wild Warrior deck, but unless you're running Yogg (blech) Shield Maiden is just strictly better.