A player loses the game after having been dealt 21 damage from any one of them, not from both of them combined
The Necron decks The War in Heaven and the Chaos decks The Horus Heresy especially stand out to me
Luckily, with its durable design and adjustable interior, deck boxes arent required when rocking a Quiver
Many of these cards flip to show off the 2-color archetypes in Final Fantasy
Then each creature that isn't an Insect, Rat, Spider, or Squirrel gets -1/-1 until end of turn for each creature you control that's an Insect, Rat, Spider, or Squirrel
I personally, on multiple occasions, have opened a booster to play Limited only to realize I was accidentally opening a Set Booster