ultra pro oversized card sleeves Magic: The Gathering Back Archenemy and Planechase) with Ultra PROs hologram quality seal Ultra Pro Oversized Deck Protector

Japanese leaker BLACKeys October 1 post (297K views, 950 likes) confirms the trademark, describing it as a special set focusing on Legendary Megas from Pokmon Legends: Z-A

the aim here is to try and get people back into stores to not only do the draft itself, but also support the local game stores which have been struggling for the last couple of years

The possibility that any card in Historic can be retroactively rebalanced, nerfed, or fundamentally changed at any time throws Historic deck-building into volatility, and opens the otherwise static format to unanticipated changes

This does include the Sagas from the next slot, giving you a chance of opening a foil Saga here and a nonfoil of the same Saga in the next slot