One of the things that makes Rewind great is that its kind of free
The Yuna + Tidus cards are superb, depicting some of the most memorable moments from Final Fantasy history (Inspiring Call, Yuna's Decision, Together Forever, Farewell, Yuna's Whistle)
It would appear that Draft Boosters and Set Boosters can have both foils and nonfoils of Showcase or Borderless treatments, but no Extended Art at all
Goblin Rabblemaster, for example, puts out tokens which have haste, making them able to attack on the first combat they are put into play for
Whats the difference between a proxy, a playtest card, and a fake
Card effects in Magic can cause major changes to gameplay, but they still operate within the system of the game, such as making a creature more powerful or allowing a player to draw more cards