So for opening hands it would be 6, if you wanted to find the odds of drawing a card by a given round, you would but 6 + 2 for every additional round(because you draw 2 cards per turn in Unlimited)
Categories with a low ratio of total cards to different cards do not include as many repeated placements of cards, which indicates that your participants agreed less often on which cards belong in this category
I feel we keep seeing Field of Ruin time and time again, its been printed in several precons and I was quite surprised the Lord of the Rings cycle again had that card as a reprint over Demolition Field
There are things you can do to manage being mana hosed and mana flooded, both in deck building and in game play
As the term suggests, the rarities each signify different percentages for how easy or difficult it will be to find one of these types in the booster packs of cards for the game
Other changes that aren't exactly new card types include: Energies: There has been a design change to Energy Cards, but there is no functional difference