While you might be able to assess Rhystic Study as an immediate threat, and remove it (or failing that, encourage everyone at the table to pay and/or swing at the controller), not every player at the table has such good threat assessment
The re print is boosters and starter decks
Target's decision is a precautionary measure, the company said
In other trading card news, theres a General Mills cereal shortage thanks to Pokmon TCG scalpers.
Once that happens, the value of X won't change later in the turn even if the number of artifacts you control changes
The warp ability adds flexibility, letting it reappear later for more value, and it pairs especially well with blink effects like Ephemerate to reuse the enter the battlefield trigger, and more importantly, make it stay for good instead of warping it out