Cards like Bristling Hydra and Servant of the Conduit don't quite hold up in Commander because they spend your energy for short-term advantages
In theory, you could play Invasion of Xerex to bounce something, use Yorion to blink the battlefield, and then use the battle to bounce Yorion, Sky Nomad, which would essentially let you blink your entire board each turn if you had enough mana
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Of course, as I always say, a card is only as good as the context that surrounds it, so if there are not that many good fighting attackers, Barbaracle wont be as strong but I honestly think it is a fantastic option that immediately makes new fighting types a greater threat