Based on the promo images from the set and the card folio having half as many cards per page as the standard-sized slots, it looks like the oversized cards are twice the size of normal cards
Alongside four Scene Boxes with 6 exclusive new cards each, three of which were revealed, there will be a Chocobo bundle of 10 Play Boosters, through which will always be found a Paradise Chocobo, 10 of the Holiday Chocobo lands, and two of the (nonland) Holiday Boosters bonus cards below
Other popular copy effects in Commander, like Clever Impersonator, can only copy any nonland permanent in play
The more life you gain, the stronger your Monks get
Holt did speak very highly of the team at Square Enix that they worked with while putting this set together