Question

I conclude from the information given that he is just very lucky. I believe he is lucky, because it is very hard to perform tricks or deceive people with a dice. He may be cheating, but a dice can be very unpredictable, and he may just be skilled at the game.

Answer 1

I believe that the owner of the dice is actually not lucky. There are people who practice throwing dice in a controlled way in order to get a specific side of the dice. If he practices his dice throwing a lot, then he would have a much higher chance of winning at a game of dice.

Explanation:

Since you said he was lucky, I decided to make an answer saying that he wasn't lucky so you can choose between both of them. Your answer was good as well.