As was reported on the official Yu-Gi-Oh website at the time, events at the venue included a King of Games competition allowing players to compete against invited duelists representing some of the most talented players in the game, an open arena for anyone to pull out a mat and get down to duel, as well as (obviously) a place to buy new cards
Sure, you'd rather save your creatures with counters on them instead, but being refunded a few extra cards isn't too bad of a consolation prize if you can't dodge a board wipe
And you can kill stuff to
(However, the weird Happy Meal-shaped mascot on the bag is downright terrifying, with his too-wide mouth that looks like he would rather consume me than the apple slices
Though large mana costs are often intimidating, Kydele can provide sufficient mana as long as you have the means of regularly drawing
If you control a Spellcaster-Type monster, you can Tribute 1 monster from your field in order to Special Summon a Spellcaster-Type monster from your hand