Dimir Midrange combines efficient disruption (Thoughtseize, Fatal Push, Nowhere to Run) with midrange threats, so Spell Pierce protects your spells from their removal and counters cheap interaction like Narset, Parter of Veils' activation setup spells. Scorching Shot answers Graveyard Trespasser (3/3, often protected by ward) and bigger threats more reliably than Burst Lightning's 2 damage. Academic Dispute is weak since they have few creatures worth forcing into blocks, and its Learn mode is a marginal upgrade compared to proactive disruption here. Keep pressuring early since this matchup can become a grind once their removal and card advantage engines take over.