And then you run the risk of not being able to summon a monster yourself next turn
An Illustration Rare, marked with a single gold star, takes a regular Pokmon and drops it into a full-art scene, often in its natural environment
The game cannot proceed because of this, unless something kills the clone (such as someone casting a Lightning Bolt on it.) The proper result of this would be that the game ends in a draw.
But as mentioned before, the text box exchanging effect is in layer 3 which means that it's not copiable since it's applied in a later layer
Battle Styles further expands the meta-game by introducing multiple fighting styles for certain Pokmon
Fans pre-emptively buying copies to upgrade their precons in advance of the Tarkir Dragonstorm release date, and probably a few speculators buying cards to sell later, have pushed the price steadily up