When your opponent activates a Spell/Trap Card while you control a "Magikey" Ritual Monster or a "Magikey" monster Special Summoned from the Extra Deck: Negate the activation, and if you do, destroy that card, then you can declare 1 Attribute, and if you do that, for the rest of this turn all face-up monsters your opponent controls become that Attribute. You can only activate 1 "Magikey Unlocking" per turn.
![Magikey Unlocking [DAMA-EN073] Common | L.A. Mood Comics and Games](http://lamoodcomics.ca/cdn/shop/products/e4aa855a021984d12cd9df4bdf765db194327196_7059d2e5-8ec1-4f7a-83b1-48d63efe0c3a.jpg?v=1707418955)
