Advanced format ruling
Ancient Gear Beast
Card effect (current official text)Cannot be Special Summoned. If this card attacks, your opponent cannot activate any Spell/Trap Cards until the end of the Damage Step. Negate the effects of an opponent's monster destroyed by battle with this card (including in the Graveyard).
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.