Selesnya Company floods the board with efficient bodies like Skyclave Apparition (2/2) and Enduring Innocence (2/1), plus bigger threats from Collected Company and Ouroboroid's growing counters, so Scorching Shot's 5 damage answers most of what they deploy, including a buffed Ouroboroid that Burst Lightning may fall short against. Spell Pierce has few targets here because most of their deck is creatures, but it is strong against their noncreature spells: Collected Company and Elspeth, Storm Slayer. Countering either one denies their tempo before Archon of Emeria locks each player to one spell per turn. Boomerang Basics is weak since bouncing their permanents mostly lets them rebuy value (bouncing Skyclave Apparition or Badgermole Cub just lets the enter trigger happen again), and you only draw a card if you controlled the permanent. Prioritize killing Archon of Emeria and Thalia, Guardian of Thraben on sight since both severely hamper your spell-dense game plan.