4 Sheoldred, The Apocalypse Apocalypse Now Sheoldred isn't nearly as oppressive as she used to be in Standard, however, that's mostly due to players making sure their deck builds have multiple answers to her
2 - Jace, the Mind Sculptor It's funny to think that Jace, the Mind Sculptor, once considered the strongest Planeswalker of all time, might just not have a place in Timeless because it's competing with The One Ring in the four-mana slot and has a close race with Teferi, Hero of Dominaria in the format's Azorius and Jeskai Control lists
How can you not like it
Throw in the couple that have lead to mill victories and I think Wretched Confluence is in double figures
Examples here include Unburial Rites, Deep Analysis, and Roar of the Wurm
Even as two different types, Infinity and Stone scream Marvel so much that they may have forced the change