He also has the "Choose a Background" mechanic, which lets players give him different partnered enchantments
Doc Bold Knight is a really good card in Steel, as youll often be getting down to 0 cards in hand: making this a cheap way of drawing to 2
More importantly, his is a key card for many combo decks that need access to more mana in order to win the game on the spot.
So as a whole, I would say its obviously very good for Japan, but more than anything, its just trying to lean into the authenticity of what it represents to that market what the history is with respect to video gaming culture in that region, and making our players globally excited.
Its a great answer to control decks since it makes tokens on cast, minimizing the usefulness of countermagic, and is practically impossible to remove
And if you also value style when storing your collection, you'll find it at Ultimate Guard