Like the previous Special Booster ver2.5 [BT19-20], BT21 will also have a serial number card included at a low rate
When an opponent's monster declares an attack: Toss a coin and if the result is heads, negate the attack, and if you do, inflict damage to your opponent equal to half the current ATK of that monster your opponent controls
It can help you remove a monster from your board to pop 2 cards
Cards like Nightmare Unicorn can use their effects during the opponent's turn as a form of disruption and cards like Avramax become almost impossible to get rid of for most decks
[3] The exact details of this Deck Master ability are unclear
Table of contents About The Weather Painter Thunder The Weather Painter Thunder, Fairy effect monster, designed by Konami first released in Jun, 2022 in the set Maximum Gold: El Dorado