When a Standard deck is powerful enough, it's not uncommon for the same strategy to creep back into older formats. In this case, Yorion Jeskai Lukka has become the best deck in Pioneer, even though it picked up very little.
If you're familiar with the Ikoria Standard version of the deck, you'll understand what this deck is capable of. It's a fairly straightforward midrange deck except for Lukka, Coppercoat Outcast and Yorion, Sky Nomad. Both of them are responsible for the vast majority of difficult decisions you'll face in your games.
Trying to connect an expensive, sorcery-speed Polymorph effect on one of your creatures is more difficult than you might think but it's not the only way for you to win the game. Thankfully, Heart of Kiran and Gideon of the Trials are safe from most removal and you have Teferi, Time Raveler to protect your combo. You can also uptick Lukka when your opponent doesn't have enough power on the battlefield.
Without Teferi on the battlefield, your opponent will . . .