Selesnya Company floods the board with small creatures like Elvish Mystic, Llanowar Elves, Badgermole Cub, and Collected Company hits, so Pyroclasm is strong, sweeping their mana dorks and many 1- and 2-toughness threats. Redcap Melee answers bigger threats like Skyclave Apparition or Thalia, Guardian of Thraben cleanly. Monstrous Rage is weak against a deck that can profitably block or remove the enchanted creature with Skyclave Apparition, and a couple copies of Kumano Faces Kakkazan trim since a slower, more controlling anti-swarm plan is better than incidental face damage here. Watch out for Archon of Emeria limiting you to one spell per turn, which can strand extra burn spells in hand.