Beastbound Savage carries powerful Keywords in Celerity and Frenzy, making it a fair buff target. However, its base stats relative to its mana cost leave much to be desired. This card never sees play.
In Gauntlet, unlike in Constructed, Beastbound Savage can be a powerhouse. Paired with any buff (especially the likes of Killing Edge/Wailing Overdrive/Afterblaze), it can win the game immediately by providing a huge threat and board clear simultaneously. Without a buff, it still makes it a risky proposition for the opposing general to protect themselves with minions.