The Emerald/Sapphire deck has a lot of cards focused on Big Hero 6 , but Lorcana regulars like Stitch and Goofy get to shine, too
In the middle of the game, you can use the respective color traits of [RB1-015 Fumamon], [RB1-023 Ghilliedhumon], and [RB1-030 Regulusmon] to respond to various circumstances
The Pikachu ex card can do heavy damage if you have a full bench, but the Zapdos is a nice backup if Pikachu gets eliminated early
The 5-cost Nami can force the opponent to add a Life card to their hand, making them more vulnerable to your attackers 9-cost Boa gives us more survivability while putting your opponent behind on Life cards
Overload [cost] means "You may choose to pay [cost] rather than pay this spell's mana cost" and "If you chose to pay this spell's overload cost, change its text by replacing all instances of the word 'target' with the word 'each.'" If you don't pay the overload cost of a spell with overload, that spell will have a single target