mystery booster box above and beyond the 1 Mystery Booster Booster Pack (Convention

Tails: Destroy it, but lose LP equal to its Pendulum Scale x 300

It destroys anything at instant speed for three mana save for lands and just leaves them 1/1 grounded Human in exchange

Past in Flames: I think this is the most valuable card of all of the decks at the point of being spoiled

While we can argue over whether Jace, the Mind Sculptor was unbanned to sell Masters 25 or because Wizards felt like Jace, the Mind Sculptor was a good addition to Modern and took advantage of the impending release of the Masters 25 reprinting to unban it, regardless of the motivation, there's no doubt that Jace, the Mind Sculptor being unbanned is a good thing for the sales of Masters 25