The ratio of people to cake is too big.
Excuse me, I believe you have my stapler...
Yesterday I played the game for the first , I did enjoy it but I have this question :
How many time I can use artifact cards , I know when to play the card but how many times ? is there cards with one time use then it discarded from the game ?
All of the artifacts tell you when to use them. The ones that say immediately are obviously single use. The ones that have a condition are whenever that condition is met.
You don't discard any of them, since they are worth points at the end of the game.