Edison format ruling
Castle Gate
Card effect (current official text)This card cannot be destroyed by battle. Once per turn, if this card is in face-up Attack Position, you can Tribute 1 Level 5 or lower monster to inflict damage to your opponent equal to that monster's original ATK.
Rulings
- If you use Shield & Sword to switch the original ATK and DEF of a monster and then Tribute it with Castle Gate, the damage inflicted will be equal to the monster's unaltered original ATK. For example, if you use Shield & Sword to switch the original ATK and DEF of Mystic Tomato and then Tribute it with Castle Gate, you will inflict 1400 damage to your opponent's Life Points.
- You can Tribute a monster whose Level is reduced to 5 or less by a card effect.
- If you Normal Summon Fusilier Dragon, the Dual-Mode Beast without Tributes and reduce its Level to 5 or less with a card effect, when you Tribute it with Castle Gate you will inflict 2800 damage to your opponent's Life Points (Fusilier Dragon, the Dual-Mode Beast's original ATK).
- When you Tribute a monster with a printed ATK value of ?, no damage is inflicted to your opponent's Life Points.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.