If youre looking for demon cards, make sure to play the creature cards, like Ob Nixilis, Captive Kingpin
The other featured preview card from Wizards of the Coast is in this article by Adam Styborski
A fourth, smaller but common, is forgetting to attack with the leader herself: Yamato has Rush as a leader, so that attack is free every turn, and skipping it is a missed point of pressure, not a safe pass
Plus, it can give you some insight against an opponent who is using one of the starter decks as a base for what they bring to the table against you
This attack does 60 more damage for each Pokmon you discarded in this way
Jurrac Gallim X FIRE Level 2 [ DinosaurTunerEffect ] ATK 1200 DEF 0 When this card is destroyed by battle and sent to the Graveyard: Your opponent can discard 1 card to negate this card's effect, otherwise destroy the monster that destroyed this card