Whenever an opponent casts a spell, you have five seconds to choose a keyword you haven't chosen for a card named Modular Monstrosity today that's been printed on a creature card. If you do, Modular Monstrosity gains that ability. Otherwise, Modular Monstrosity loses all keyword abilities.
![Modular Monstrosity (Unfinity Foil Edition) [The List]](http://www.cardmerchanttakapuna.co.nz/cdn/shop/files/45351490-37da-58f4-ab06-e765cdbd9d31.jpg?v=1770932311&width=1445)