Nomads' Assembly

The math problem this card poses is deceptively simple: cast it once and you double your board, then cast it again from exile and double the already-doubled total. Rebound is the multiplier here, and it interacts with the token count in a way most rebound spells do not, because the second cast counts every creature you control at the time it resolves, including the tokens the first cast made. A board of four creatures becomes eight on the first resolution and sixteen on the next upkeep, the kind of geometric blowout that turns a stalled go-wide deck into a lethal one over two turns. The cost of all that is patience and a battlefield: at six mana it is a top-end payoff, not curve filler, and it does literally nothing cast into an empty board. Rebound also pins the second printing to your upkeep, so there is a full turn cycle where the opponent knows the second wave is coming and can plan a sweeper around it. That delayed-detonation window is the real tension in the design, since the spell rewards a wide board but also telegraphs exactly when it is about to get twice as wide. It is a white token finisher that scales off creature count rather than dumping a fixed army, a payoff for a deck that has already done the work of going wide and wants a reason the opponent cannot stabilize against it.