Cards given out as challenge promos in the use C1 , C2 etc There are also promo cards with a D23 set ID, though the original D23 Expo set cards are part of the P1 set
They definitely seemed glossier, but not quite foiled out in the same way as regular cards
You'll likely want to make use of the Jolly Roger to get the most value out of the Hydra , but the benefit of this character is that it can reflect the damage it takes onto the opponent's characters even if they aren't exerted
Card Name Mana Cost Type Enchantment Rarity Uncommon rules Text When this enchantment enters, draw three cards, then discard two cards.At the beginning of your end step, if eight or more cards are in your graveyard, transform this enchantment
The release of the last set of cards did not go so smoothly, and was ultimately delayed