My event uses dice.
The newest Tryout Duel, Build-a-Deck, is now live in Master Duel. The event will run until July 3rd (time zones applying). In this event, you will be provided with a 30-card Main Deck and a 12-card Extra Deck with rental cards, whose effects revolve around coin tosses and dice rolls. These cards cannot be removed from the Deck, so you will have to add more cards from your collection to the Deck. By winning 3 matches, you can obtain 1 pack from the most recent set: Climax of the Showdown.