While they all have unique abilities, when you consider that we have cards like Teferi, Hero of Dominaria and Chandra, Torch of Defiance in Historic, most of the new Jumpstart: Historic Horizons planeswalkers just do too little and cost too much to take them seriously as competitive cards (although I am excited to build a Davriel, Soul Broker deck, mostly because I'm still not exactly sure what the card does)
Some of them are cards like Aeon Chronicler and Body of Knowledge whose power scales with the number of cards in your hand
No guarantee of equal return
3 Zareth San, The Trickster Although typically within the 99 to take advantage of his first ability, Zareth San, the Trickster is nonetheless a powerful commander option for anyone looking to steal permanents from their opponents
The flexibility of a card that gives you some life and board presence early and becomes a finisher in the late game is worth a slot in lots of white decks