mtg card banned before release October 13, 2021 and Restricted Announcement: Trickery and Memory Lapse Removed from Historic; No Changes to Standard • Arena Zone Strixhaven cards pre-banned on MTG

The final group is the catch-all for the other utility cards in the deck

Well, a Planechase card, or oversized MTG, card is essentially two cards laying sideways, put together

Identified by the retcons as a "Legendary Shapeshifter", Halfdane enters as a 3/3 before shifting into having the statline of another creature on the battlefield, represented here as he transforms to mimic that Viking guy

plan on putting in my Sauron deck

Speaking of foundational cards for your decks, you can also receive this double rainbow foil Sol Ring promo card while supplies last with the purchase of a Foundations Play Booster box or Collector Booster box