Pyroblast is live against Counterspell, Dispel, Brainstorm, Lorien Revealed, Spellstutter Sprite, Faerie Seer, Ninja of the Deep Hours, and Baleful Strix, making it a premium one-mana answer in this all-blue control matchup. Envelop adds another free counter for their sorceries like Lorien Revealed. Moment's Peace and Weather the Storm are far less useful against a non-aggressive control deck, so they come out in favor of more interaction. Keep the full artifact mana package and Mystical Teachings to keep grinding card advantage against their long-game plan.