Same flaws as the card game What flaws there are with Arena are, fittingly, the same flaws you can identify with Magic: The Gathering
These cards serve valuable utility in Dimir reanimator decks in Legacy, which use blues unmatched stack interaction with blacks hand disruption and Reanimate, which is trivial to set up with pieces like Entomb or Troll of Khazad-dm, or even targeting yourself with Thoughtseize
Whats your collection vibe
Game designer Carmen Klomparens revealed she was gifted 'Heroes of Kamigawa', an MTG planeswalker designed for staff who worked on the MTG set, Kamigawa: Neon Dynasty
Just be clear about what you agree to and, more importantly, keep your word
I have the deck foiled out in Modern and Legacy, and it's one of my most prized possessions