6 Lurrus Of The Dream Den - 31 Days The final card that was banned in May 2020 after 31 days, Lurrus of the Dream Den was removed from both Legacy and Vintage formats (via Magic Wizards )
This would be almost as catastrophic for WotC as it would be for brick and mortar stores
Apprentice Necromancer Clive, Ifrit's Dominant Cryptek Dion, Bahamut's Dominant Distinguished Conjurer Jugan Defends the Temple Mystifying Maze Ruin Ghost Safe Haven Tawnos's Coffin Terra, Magical Adept Viashino Sandscout Viashino Sandstalker Vraska, the Silencer
He comes down at the right part of the curve and with an even average roll-out he has a ton of potential to close games out quickly
Alternatively, it can also act as a source of card advantage if you already have all the creatures you need
For more information on which specific products are coming in June 2023, check out this article on DailyMTG