Talk:McLaren Mercedes MP4-25 (Championship)/@comment-84.140.112.208-20170119110600/@comment-30394890-20170120053525

in the box

the probability of engine card is about 30%

6 cards => 2 engine cards

10 cards => 3 engine cards

20 cards => 6 engine cards

or you can buy the box with 120 tokens

3 cards => 0 or 1 engine cards