Boros Energy floods the board with cheap value creatures like Guide of Souls, Ocelot Pride, and Ranger-Captain of Eos, so Pest Control's sweep of mana value 1 or less permanents is a huge tempo swing, wiping Guide of Souls, Ocelot Pride, and Ragavan in one sorcery. Wrath of the Skies scales further to catch Ajani, Nacatl Pariah and Seasoned Pyromancer tokens once you have more energy to spend. Heartless Summoning is often a liability here since its -1/-1 doesn't meaningfully slow their aggression and shrinks your own blockers, so it comes out along with a Momentum Breaker that does little against a deck without a single big threat to edict away. Keep Solitude and Fatal Push up to answer Ragavan and Ajani before they take over the game.