During this event period, Superb Tea appears in Duel World (DM). She uses a counter trap fairy deck, and you can duel her to obtain some of the fairy monsters that she uses, with the prize UR being Meltiel, Sage of the Sky, as well as being able to obtain a burger icon if you win the duel 3 times using Yami Yugi.
With some of the newer support, a Fairy counter trap deck might start to become viable. Use these with some of the more easily usable counter trap cards like Divine Wrath or Magic Drain to activate your monsters' effects and gain some advantage.
How to beat Superb Tea
Since Tea doesn't really have good ways to deal with monsters above 2000 attack and/or defense, you can have a pretty easy time by using Paradox Brothers' skill "Elements Unite!", or Rex's Dinosaur Kingdom. Together with some draw cards in the deck can help speed up the farming process much faster.
After 1 of your Counter Trap Cards has been activated and has resolved, you can Tribute all monsters you control to Special Summon this card. If this card is Special Summoned in this way, you can destroy cards your opponent controls up to the number of Fairy-Type monsters you Tributed.
During either player's turn, when your opponent activates a Trap Card: You can send this card and 1 other Fairy-Type monster from your hand to the Graveyard; negate the activation, and if you do, destroy it.
If "The Sanctuary in the Sky" is on the field, you can activate this card by discarding 1 LIGHT monster from your hand to the Graveyard. Choose 1 card your opponent controls or 1 in their hand (you can look at their hand), and send it to the Graveyard.