Activate only if you control a "GMX" monster. Once per turn, when your opponent activates a monster effect on the field (except during the Damage Step): You can excavate the top 5 cards of your Deck, then if you excavated a "GMX" card(s), negate that activated effect, also place all the excavated cards on the top or bottom of the Deck in any order.
![Anti-GMX Final Experiment [BLZD-EN096] Super Rare | Exor Games Bridgewater](http://exor-games-bridgewater.myshopify.com/cdn/shop/files/ygo_placeholder_18e903f2-0907-46a3-87ce-3480dc89598c.png?v=1777402607)
