Japan is the useful tell here, and it points the opposite way from the rest of the set
Humility Humility completely shuts down creature-based strategies by wiping away all abilities
Witherbloom is rightfully expensive at a cost of six colorless, one black, and one green mana (eight total)
Culling the type and turning them all Psychic, while moving Poison to the underused Darkness typing, was among the best ideas Creatures has ever had and provides greater balance to the game as a whole, as opposed to leaving an outlier type which was created specifically to rein in a type that has never been a problem in the TCG and not once has been used to showcase its merits as something other than "the Dragon killer type" The Fairy type suffered from poor implementation since day one
Please let me know if I succeeded in convincing someone in giving the tribe a shot
That being said, [casthaven]Admiral Beckett Brass[/casthaven] is fairly weak as a commander