Advanced format ruling
Gemini Trap Hole
Card effect (current official text)Activate only when a Gemini monster that is treated as an Effect Monster is destroyed by battle. Destroy all monsters your opponent controls.
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.