This is a mirror-ish matchup against another prowess-aggro deck, and Magebane Lizard's 4 toughness blocks their Monastery Swiftspear and Emberheart Challenger profitably while punishing their heavy noncreature-spell count. Flowstone Infusion kills their key 2-toughness threats (Monastery Swiftspear, Emberheart Challenger, Screaming Nemesis's 3 toughness survives though) while also functioning as a combat trick. Reckless Rage is risky since it deals 2 damage to our own creature, which is costly when both decks are racing with low-toughness attackers; trim to make room for Magebane Lizard's durability. Prioritize blocking with Magebane Lizard to stay ahead on the damage race since both decks are symmetric in speed.