Goat format ruling
Fairy Box
Card effect (current official text)When your opponent's monster declares an attack: Toss a coin and call it. If you call it right, the attacking monster's ATK becomes 0 until the end of the Battle Phase. During each of your Standby Phases, pay 500 Life Points or destroy this card.
Rulings
- If you have two copies of Fairy Box applying on the field you may flip a coin twice, but only need to call 1 correctly to reduce the attacking monster’s ATK to 0.
- The current ATK is reduced to 0, including all Equip Spell Cards. Trap Cards and Quick-Play Spell Cards cannot further increase the monster’s ATK this battle. A monster effect such as Injection Fairy Lily can increase its own ATK after Fairy Box is successful.
- Paying 500 LP is optional, if you choose not to pay Fairy Box is destroyed.
- The effect of Fairy Box does not target, so Lord of D. will not prevent Fairy Box from reducing the ATK of an attacking Dragon monster to 0.
- Q: Player B: Declares an attack with his/her monster to your "Airknight Parshath". Player A: Activates "Fairy Box" and calls the coin toss correctly reducing the attacking monster’s ATK to 0. Is the damage to Player B considered Battle Damage and is "Airknight Parshath’s" effect activated? A: The attack would result in your opponent taking Battle Damage from a battle involved with your "Airknight Parshath." You will draw a card from your deck after calculating the damage. "Airknight Parshath" does not have to be the one to initiate the attack. (It just tends to happen that way.)
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.