Mono-White Aggro curves out with efficient creatures like Thraben Inspector and Search Party Captain, and Thraben Charm's damage mode scaling with your creature count can trade favorably with their small bodies. Cast into the Fire adds cheap interaction against their go-wide plan, since its 1 damage to each of up to two targets picks off 1/1 Bird and Spirit tokens from Battle Screech and Fortress Kin-Guard. Fling and Bitter Reunion are cut since they're too slow against an aggressive curve, and Boros Garrison's enters-tapped cost is too punishing in a race where tempo matters most.