Dimir Aggro is full of efficient removal (Fatal Push, Bitter Triumph, Thoughtseize) and tempo creatures like Kaito, Bane of Nightmares and Moon-Circuit Hacker, so protecting your threats and disrupting their removal suite matters more than small burn spells. Spell Pierce taxes their removal and disruption on key turns, while Octopus Form saves your Vivi Ornitier or Agatha's Soul Cauldron from Fatal Push or Bitter Triumph. Ral, Crackling Wit provides resilient card advantage and chip damage that outgrinds their removal-heavy plan. Torch the Tower and Boomerang Basics come out since 2-3 damage trades poorly into their efficient removal and bounce doesn't answer their recursive Sheoldred, the Apocalypse or Kaito.