It's a creature's Toughness, not Power, that matters under Commander Arcades, the Strategist
Ashiok is incredibly powerful for three reasons: Limited libraries are tiny, its difficult to apply pressure (particularly to a turn three Ashiok on the play), and Aid the Fallen makes it facile to get the last mill or two in
Then, if you and your opponent have a total of 4 or less Life cards, K.O
This class is clearly built with Commander in mind, which is absolutely fine, but where the other classes feel like they could work in both Standard and Commander, we can't see this one being featured in many Standard decks at all
For large buylists, call ahead of time and tell them youre interested in selling them X dollars worth of cards, so they can be prepared
On that day, she did not need to struggle to fit their rules anymore