Nico Robin is crazy good with Blue Yellow Nami, letting you trigger your Leader effect while giving you additional Life cards, and if KOd she deals damage to the opponents Leader, putting them in a more vulnerable spot to your attackers
Making your opponents hellbent slows the game as players only have the top of the deck to play from
You can use this to imprint two copies of Slime Against Humanity, netting twice as many Oozes per cast, or you can imprint another sorcery for value
Make sure your letter/package is sufficiently insured
These are new pushed cards on par with the strongest eternal staples, generic and powerful enough to go in anything so everybody is guaranteed to get at least one upgrade for their favorite deck from the new precons
Since the games incredible popular, it means multiple sets of cards are released every year