jujutsu kaisen union arena booster box Japanese: Vol.1 Many of the gorgeous high Union Arena Card Game: Jujutsu

You could forego a copy of Reset Stamp and Tag Call to include 2 of these though, as they might also be helpful in the mirror match

Grist is a welcome boost to creature-synergy decks in Modern, a format where combo pieces can be trivially picked apart

Lutri, the Spellchaser + Dualcaster Mage With the unbanning of Lutri, the Spellchaser in Commander, Dualcaster Mage now has some competition

I once shut down an entire deck from hitting me after I blocked and lost my Academy Rector to fetch this out in my Five Color Friends Commander deck

The true challenge Unown offers, however, depends on how much of a completionist you are, because there are 28 Unown forms to collect