Launch the Fleet

Cast on a single creature for one white mana, this grants a forgettable buff: swing, make one tapped, attacking Soldier, move on. Strive is what turns the spell predatory, letting each generic mana beyond the first fan the trigger across another creature. Each targeted attacker still spawns exactly one Soldier, so the escalation comes from breadth, not depth: five targets means five new attackers, not five per creature. The design wrinkle is that the spell hands out a triggered ability rather than minting tokens directly, so it lives entirely in the gap between the declare-attackers step and the damage step. Those Soldiers arrive tapped and attacking, joining the very combat that made them, but because the "whenever this creature attacks" triggers resolve during declare-attackers, the defending player still gets to declare blocks against the fresh bodies. This is a wider attack, not an ambush that slips past blocks. Being a sorcery is the constraint that keeps it honest: you commit the mana during your main phase, before combat, telegraphing the alpha strike rather than springing it once creatures are already swinging. That ties it to a horizontal shell that has already flooded the board and just wants its pressure multiplied on the turn it means to close. The gradient is the card: one target and it is a marginal trick, six targets with the mana behind them and it is a one-card commitment to a board-wide push.