The Oracle also wins the game quickly when combined with a multitude of other options, and is rather hard to exploit thanks to its ability being an ETB one
While theoretically any commander can slot into any bracket, some are clearly more powerful than others and can push the boundaries of what is expected
And more importantly, what kind of commanders will we get from the crossover
Notably, the returned Rats don't need to be among the cards you milled, so if a powerful Rat gets removed, Ashcoat can easily get it back so long as you don't mind milling four cards (and that effect can play into graveyard synergies too)
WotC changed their mind right before the set went to press, however, and decided to make sure that Arabian Nights was compatible with the existing game
IN THE FUTURE, WE ALL PLAY BUDGET DECKS So, if you scrolled down here wanting an answer for the headline question of this article: no, its not currently worth the money to splurge on expensive Commander cards