While previous sets added some new cards, like Location cards, Azurite Sea is more about building out the foundation of cards, expanding the roster, and including more of fans' favorite franchises
There he'll be a cheap, efficient source of drain on your opponents, not heavy enough to deter them from casting noncreature spells, but enough to get your own lifegain cards up and running
With practice, learning, and adaptation, the world of the One Piece Card Game is yours to conquer.
Im not positive if that will prove to be better, but getting to cast Mishras Bauble, Kroxa, or even Seal of Fire out of the graveyard every turn gives Jund some real staying power
Dragon Shield is a popular brand as they are very well-made, affordable and have a lot of cool color options, but most likely any sleeves will do