Any water Pokemon with 50 or lower HP Mars Pokemon Communication Red card You can ask your friends to share Pokemon TCG Pocket cards using the new feature if you lack some Common, Uncommon, Rare, and Double Rare cards
Were talking about a difference between a couple of bucks and potentially thousands
Although a Level 4 in a deck revolving around Level 7 Xyz monsters, Riseheart is easily special summoned when another Kashtira is on the field - a condition easily achieved with searchers like the new field spell Pressured Planet Wraitsoth, which can call either Unicorn or Fenrir who can be special summoned provided you control no monsters
Black-Green: Graveyard In Aetherdrift, as in most Limited formats, black-green thrives on the graveyard
Also I decided to not put any numbers in there either as I feel that I couldnt really commit to a minimum for any of them, so felt it sufficed to just say that these cards absolutely needed to be in the deck