Advanced format ruling
Gladiator Beast War Chariot
Card effect (current official text)When an Effect Monster's effect is activated, if you control a face-up "Gladiator Beast" monster: Negate the activation and destroy it.
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.