Ruby Storm has no blue spells to target, so Pyroblast's text does nothing here; instead the priority is disrupting their mana ramp from Desperate Ritual, Seething Song, and Manamorphose before they chain into a storm finish, which this sideboard package does not directly address, so I'm pulling Pyroblast back out mentally — treat this as primarily a race where you want maximum pressure and your removal suite intact. Destroy Evil's second mode can strip an early Hickory Woodlot-enabled aura-less threat or simply answer any enchantment-based ramp piece, though their list has none listed; its creature-removal mode is largely irrelevant since they run almost no creatures worth killing with toughness 4+. Given the lack of truly impactful sideboard tools against this matchup, this is a minimal, low-conviction swap focused on cutting the dead graveyard hate (Tormod's Crypt, since their self-mill/graveyard use is negligible) for slightly more relevant flex answers; your best plan remains simply racing them with your low curve before Big Score/storm turns come online.