The game is, as Ive been saying to folks around me, pretty close to KeyForge in style and mechanics
For a reasonable 3 mana cost, players can activate their Traveling Chocobo and use it to play any lands or other Chocobo/bird cards in their deck, provided they're in the top spot, potentially gaining a significant upper hand in either standard or commander game types
Legality depends on the tournament format -- Arcane Denial can be legal in some formats and banned or restricted in others
This means, for example, that you can't target two creatures and assign them two and zero counters respectively
The math: 6 packs times 12 cards per pack equals 72 cards total
Aside from the fact that Snow White can resurrect people, if you pair her with some protection, like Ward or Bodyguard, she has a good shot at staying on the board for a while