You cannot keep them for blocking or use them later
The copy is created on the stack, so it's not "cast." Creating the copy won't cause abilities that trigger when a player casts a spell to trigger
Illustrated by Warren Mahy Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Lets break it down: Triplet Beat marked the TCG debut of the three Paldean starter evolutionsMeowscarada, Skeledirge, and Quaquavalas Pokmon ex, a format that brought a fresh layer of strategy and collectibility
This set brings the return of two-type Pokmon cards, as well as the first Alolan Pokmon, Magearna
The need to counter a planeswalkers loyalty ability or a Bolass Citadel activation doesnt come up often, but youre happy to have it when it matters