That means each deck is entirely reworked to fit the flavor and settings of Final Fantasy
Throwing rocks at your opponents or using them to block incoming attacks was very resonant and flavorful, and players enjoyed the flexibility between stacking up counters on one land or spreading them out
It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on
Returning spells to hand gets around cant be countered threats such as Thought Distortion and Shifting Ceratops
And if you countered an ability of a dork, 'walker or artifact, they are shut down as long as you control this Merfolk Wizard, so those are permanently answered