there is no limit
40
40 or more.
There are 56 Exploding Kittens cards in the deck.
In a standard deck, there are usually around 2 to 4 EX cards included.
A typical Pokmon deck consists of 60 cards.
A Magic deck typically consists of 60 cards.
A draft deck typically consists of 40 cards.
Well, the minimum in a yugioh deck is 40 cards maximum 80cards. Most people try to have a smaller deck over a larger deck, to get cards they need. About a 40-50 card deck is good.
There are three "Just Say No" cards included in a standard Monopoly Deal deck.
There are eight skip cards included in a standard deck for the game Phase 10.
A Magic: The Gathering deck typically consists of 60 cards.