Aborted Arc: A lot of plot lines got abandoned in between Seasons 1 and 2, some simply went nowhere, and some were due to decisions made when dubbing
It is possible to put tokens on the opponent's field and destroy them to strengthen them, but the strengthening is only 300 per token, so it's not worth the effort of combos
Royal Bloodlines expansion - Features powerful new characters, leaders, and strategies from the One Piece universe
For regular upgrades I highly recommend: Vito, Thorn of the Dusk Rose, Mondrak, Glory Dominus, Anointed Procession, Parallel Lives, Eerie Ultimatum, and you can also run the Cat Oven combo with Cauldron Familiar + Witch's Oven + Clock of Omens, and there's the Ballista Combo Heliod, Sun-Crowned + Walking Ballista, and finally the Exquisite Blood Combo since the deck already runs the other piece Sanguine Bond One Down, Three to Go
I spoke to Dave Chalker, an extraordinary game designer with deep expertise in both chocolate and peanut butter (I think D&D is the chocolate I forgot to ask Dave)