Here:
https://ringsdb.com/decklist/view/14715/astereotypicalbeorningdeck-1.0
mono-Tactics was the favorite sphere combination and Grimbeorn, Hirgon, and TaEowyn were the most popular heroes, but the majority of the decks sampled had the Beornings as an Eagles throw-in rather than concentrating on them in their own right. Tactics lacks a useful way to get Beornings into the discard for the Skin-Changer to exploit, or an easy way to get the Skin-Changer back once you use it.