Advanced format ruling
Ancient Gear Cannon
Card effect (current official text)You can Tribute this card; inflict 500 damage to your opponent, and if you do, neither player can activate Trap Cards during the Battle Phase of this turn.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.