Aggressive Biomancy Aggressive Biomancy is a clever little card, creating token copies of a creature you control and having them fight on the way in
If the game ends, or if you leave a multiplayer game, you need to reveal your face-down permanents to everyone to ensure they came to be face down legally
Certain cards will also gain oil counters, though these seem to function as a set-specific resource similar to energy from Kaladesh whose use differs depending on whats on the table
Alongside the sweet snowy designs on the covers, if you're curious what comes with each of these items, here's the breakdown: the booster pack sets you up with 12 cards, including six Common cards, three Uncommon cards, two cards of either Rare, Super Rare, or Legendary rarity, and one random foil card