So, while some local game stores and Disney Parks are selling this set today with prerelease events, the cards will not be widely available until July 24, which will affect the market prices of cards as people begin opening packs
But it tends not to matter to people whether the card chewing away at their life and resources is Arcbound Ravager, Lantern of Insight or Chandra, Torch of Defiance
There is the risk that some decks out there don't have any spells they won't be able to cast, but the loss in such a case is the mana required to make him work more than the opportunity cost of a larger creature
Jeskai Flashback is Mystic Intellect , with Sevinne, the Chronoclasm as the face commander
There is a bit of deck building tech if you put in a number of historic lands, likely Legendary lands to mitigate getting stuck on lands
If you are sandwiching your card between a rigid material such as cardboard, taping all sides of the material will also help the card from sliding free while in the process of being mailed