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 | Pegasus Games WI](http://pegasus-games-wi.myshopify.com/cdn/shop/products/e4aa855a021984d12cd9df4bdf765db194327196_806b50cc-11d4-4f9b-bddc-2e7f8677e71f.jpg?v=1649350884)
