Advanced format ruling
Ancient Gear Drill
Card effect (current official text)If you control an "Ancient Gear" monster: Discard 1 card; Set 1 Spell Card directly from your Deck. This turn, that Spell Card cannot be activated.
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.