Teferi, Hero of Dominaria is probably the best since it untaps lands to pay for the spells, but pretty much any scaling planeswalker like Professor Onyx and Elspeth, Storm Slayer works
And for Will, there are plenty of ways for an Azorius deck to gain a bunch of life, letting you cast something like Sphinxs Revelation for a big discount
If you take a look at the card-back design of any US Pokmon card, youll notice that the Pok Ball is opening from the wrong side
The best of the bunch is Song of the Dryads, which turns the enchanted creature into a forest
now, I have over fifteen potential playables to choose from, and they honestly could all end up being some of the most important cards in Standard since we dont have a real metagame yet (so its not just about slotting cards into existing decks like it was with the previous ones)