every turn there are usually about 10 to 50 possible sequences of plays you can make -- and not only would it matter which plays you select, but in what order
@JimmyHoffa well there are two game modes (right now, anyway; they are planning more modes) -- the normal "Play" mode is free and unlimited to play, and you get to select whichever deck with whichever 30 cards you want between each game
the Arena makes you keep your deck until you either lose 3 times, or win 9 times, whichever comes first
the more you win with your arena deck, the larger your reward
you are guaranteed to get 150 gold (the alternative to paying $2.00 to enter the Arena) if you win 7 games with one deck
if you win less, you get less gold, and less chance at things like a packet of cards for your collection
there's one more thing about the arena I haven't told you yet: you only get to pick your cards to a very limited extent
out of the entire list of all possible cards in the game, the game randomly draws three-card pairs, repeatedly, for 30 rounds, and you have to choose one card per pair to construct your 30-card deck for the Arena
once you make 30 choices (and each choice is irreversible; you can't go back), you are stuck with those cards until you either lose 3 times or win 9