There aren't a ton of creatures that are very threatening
There are other card drawing artifacts that could be used, like Aladdins Lamp or Jandors Ring but neither of those are particularly playable, in my opinion
If your opponent takes out Avacyn, they've got one turn at least to deal with the Shepherd before it brings her right back in a frightful bit of synergy
9 Betor, Kin to All Betor, Kin to All certainly makes a strong first impression, and sets itself apart from other 2025 Commanders in Magic: The Gathering to be one of the best, with its tiered toughness milestones : drawing a card at ten toughness, mass untapping at twenty, and halving opponents life totals at forty
I think it is very interesting, in that regards, to compare Luigi Vezzonis 9th place list from Stuttgart Regionals: Town Store is the Stadium of choice here, as it can get Forest Seal Stone, and defensive Tools in Ancient Booster Energy Capsule and Bravery Charm