Talk:Gameplay/@comment-24915410-20150307225323/@comment-26069426-20150415161039

Sorry for posting to such an old comment but questions like these should really be answered by more experienced players.

1DarkLoneWolf2, you can have a minimum of 50 cards in your deck, with no cap. However, deck-builders will tell you that staying as close to the minimum as possible is recommended. This is because the more cards you have in your deck, the less likely you are to see a particular card. This can affect your consistency.

There are exceptions to this, of course:
 * If you have a need for every card, and a way to get the cards you need (tutoring), playing more than 50 simply gives you more options, although currently this strategy isn't well supported;
 * Your deck's winning image focuses on whittling down (milling) your deck for gauge, or for more options in your discard pile or in your hand; i.e. Disgard.

If you're not playing a milling or tutoring deck, all the extra cards in your deck will decrease the likelihood you'll get the cards you need into your hand.