Once your creatures are out of the way, Ajani, the Great Hearted has no way to protect himself nor provide you with any advantage for having him on the battlefield
Im a huge fan of the card, and can already see a vast series of ways you can abuse this for easy wins in Commander games, so lets talk about him
Usually it's green or artifact
Turns out that this is the perfect way to cheat on time counters in a suspend build
Most black decks that dont want to win through combat or combos are going to be winning with life drain, whether thats through intricate graveyard shenanigans, aristocrats, or just pumping a bunch of mana into a spell
There's also the surprise inclusion of Moonshaker Cavalry, which for its power feels like the white equivalent of getting Craterhoof Behemoth reprinted in a Commander precon