That said, this can be easily exploited with flicker cards like Ephemerate, Cloudshift, and Eerie Interlude
The average planeswalkers per deck is not much higher than one, if even that
Another method is to use cards that allow you to cast them or return them from your graveyard, like GravecrawlerGravecrawler
8 Sergeant Tibbs: Courageous Cat The Sergeant Tibbs card in Disney Lorcana isn't one of the showiest, but it does an excellent job of recapturing the raggedly sketchy look of the animation in 101 Dalmations
If you do, return that card to the battlefield under its owners control at the beginning of the next end step. You can also cycle it for three mana too, but the key thing here is just filling your deck with cards that cycle and strong ETB effects, and then just going absolutely wild
Whats even better is that Modern Horizon 2 s cards are great for both Modern and Commander