While there aren't many obvious Legacy or Vintage staples, there are a ton of cards that will be heavily played in Commander and some new legends that, while not quite on the level of Atraxa, Praetors' Voice, will be the foundation of a lot of Commander decks
Perhaps, then, we could include the card but reskin it
This Commander comes with 4/4 stats and Flying, making her an excellent Voltron-style centerpiece of the deck, being an active threat
This 5/4 with Menace dishes out -2/-2 to other creatures, and that might be enough to trigger a big with the Blight Curse precon
There are so many incentives to flood the battlefield with cheap garbage and end the game before it ever really starts, and Punishing Fire provides a reasonable backstop against those strategies, which are often among the best in Modern
This is when your cheap utilities and key cards you want to acquire are often at their lowest