Izzet Spellementals is a tempo-combo deck that leverages Hearth Elemental and Sunderflock as its primary threats, fueled by a high density of cheap cantrips like Opt, Sleight of Hand, and Flow State to find its pieces quickly. Your sweepers Day of Judgment and Pyroclasm are key — keep them in, as clearing Hearth Elementals before they grow out of control is critical, and Pyroclasm in particular answers their early board before they snowball. Bring in Flashfreeze to tax their key red and blue spells (Burst Lightning, Hearth Elemental, Prismari Charm) and Annul to counter their enchantments and artifacts like Winternight Stories. Get Lost comes in as a clean answer to a resolved Hearth Elemental or Sunderflock that slips through. Cut Erode (too slow and situational in this matchup) and one Improvisation Capstone, as their counter-magic suite post-board (Spell Pierce, Spell Snare, Hexing Squelcher) punishes expensive sorcery-speed plays.