Jeskai Baller

Rebound has almost always lived on instants and sorceries, where recasting a burn spell or a draw effect on your next upkeep is the entire payoff; welding it to a creature is the twist, and the reason it functions is that the token comes from a cast trigger rather than an enters-the-battlefield trigger. That distinction is the whole engine. Cast this from hand and it exiles as it resolves before the creature can enter, so the first cast nets you only the 1/1 white Athlete token. The 2/3 body does not arrive until the rebound resolves on your next upkeep, throwing a second token as it goes. One physical card yields two spellcasts, two tokens, and one 2/3, spread across two turns. Because the value hangs off casting rather than the creature landing, anything that counts spells cast (or creature spells specifically) fires twice from the same card, and the free rebound cast means the second trigger costs nothing to earn. The premise is silly and the execution is precise: a creature routed through the one keyword built to reward being cast more than once, where the exile-on-resolution clause that normally just delays a spell instead delays the entire body.