The Extra Zero Festival has been announced for Master Duel for July 19th, 2022. The key special rule is that you cannot have any cards in your Extra Deck, with all Fusion, Synchro, Xyz and Link Monsters being Forbidden. Pendulum Monsters are still legal. The second less noticeable rule is that Duels will be limited to 300 seconds or 5 minutes (keep in mind regular Duels have an 8 minute limit PER TURN).

Additional changes have been made to the Forbidden/Limited List for the event:

Forbidden:
All Fusion Monsters
All Synchro Monsters
All Xyz Monsters
All Link Monsters

Darklord Nurse Reficule
Garbage Lord
Giant Kozaky
Inspector Boarder
Malevolent Mech – Goku En
Michion, the Timelord
Raphion, the timelord

Amorphactor Pain, the Imagination Dracoverlord
Herald of Perfection
Herald of Ultimateness

Cauldron of the Old Man
Chain Strike
Cybernetic Fusion Support
Fire Prison
Performapal Popperup
Star Blast
White Veil

Appointer of the Red Lotus
Bad Reaction to Simochi
Cease-Fire
Chain Burst
D.D. Dynamite
Destruction of Destiny
Extinction on Schedule
Imperial Order
Relay Soul

Limited:
Anchamoufrite
Ghost Fairy Elfobia

Megalith Hagith
Megalith Ophiel

Black Garden
Burden of the Mighty
Card of Demise
Chicken Game
Level Limit – Area B
Necrovalley
Secret Village of the Spellcasters
Spell Power Mastery
Super Hippo Carnival
Zombie World

Gozen Match
Gravity Bind
Mask of Restrict
Ojama Duo
Ojama trio
Skill Drain
The Monarchs Erupt
True Draco Apocalypse
True King’s Return

Semi-Limited:
Pandora’s Jewelry Box

You can earn medals by playing Duels and you can obtain the following rewards according to the number of medals you have:
50 to 11000 medal threshold: a total of 2300 gems
12000 to 21000 medal threhshold: a total of 20 Legacy Pack tickets
Additionally, at the following thresholds, you can get these rewards: