Aya can become a token-generating engine for decks stacked with historic creatures
On its own, casting and sticking enough historic creatures for Bayek of Siwa to be relevant is easier said than done, and like Arno Dorian, its disguise effect isnt too useful from the command zone
Command your army with Abzans Mythic Spirit Dragon, Betor, or Felothar, khan of the Abzan clan
You also need a target to make her work
Drawing two cards for two mana is no joke, especially if the cost is pitching a land we dont need, a spell we cant cast, or a creature we may want to reanimate later
Brass fills your graveyard and then lets you bring Pirates from your graveyard back to play with a finality counter on it, so if it dies again it's gone forever but gets a bit of an upgrade to its stats at the same time