All weekend long. WonderCon Yu-Gi-Oh! League (Entry fee: $15)
Players receive a Yu-Gi-Oh! Structure Deck and a random Booster Pack. Open-play format: play anyone else in the league, win or lose: win cards to beef up your deck. Prize support: various cards, and promos. The player with the most matches played each day wins an additional prize. Ending time is approximate.