In the meantime, Lazav is eating that Atraxa, Grand Unifier out of the opponents graveyard on turn 3, and maybe even as a 7/7 lifelinking flyer
Along the same personal preference vein, I honestly think Recruit the Worthy is an undervalued card
Some cards like Flash were banned specifically because of their effects in cEDH, although most of the cards are banned because of their effects on the format in general
They are legal in the formats you would expect from tabletop Magic as well as Brawl, Historic, and Timeless on MTG Arena
Bushi Tenderfoot / Kenzo the Hardhearted Another exception here, Bushi Tenderfoot is a flip card, specifically a human soldier that flips into a mighty samurai as the result of its training
Hei Bai's last ability doesn't cause you to move counters from Hei Bai onto the target creature