Hades 2 introduces a few new systems to players, including one that allows you to make minute upgrades to Melinoe’s base stats and abilities: Arcana Cards. These cards provide passive buffs to a plethora of stats, and some act outside of battle and allow you to re-roll boons, increase your chance of finding a resource pickup, and more. You’ll have access to these cards right from the start of the game, but their true potential remains hidden for quite some time.