And, as far as I know, there are 3 more bonus cards to add to those 252 cards: the "cowboy", the "mountain of gifts", and the "falling rabbit". I only missed the former (was only for the US I think), but I'm happy already with 254 cards!
Some would say that the original Dixit has the best cards. I can see their point but once all three decks are mixed the end result is a big stack of really good cards.