Ruby Storm doesn't cast blue spells, so Pyroblast only comes in as dead weight if there's nothing blue to hit; however, this is Ruby Storm's own colors so Pyroblast and Relic are actually off-target here too since the opponent isn't blue and graveyard hate doesn't stop their ritual-based mana generation from Seething Song or Desperate Ritual. Given that, this matchup is best approached as a pure speed race rather than a sideboard-interaction one: the Pyroblast and Relic of Progenitus package is largely symbolic since neither answers their actual gameplan of chaining rituals into a giant Glimpse the Impossible or Seize the Storm finisher. We're honest that our best plan is simply to goldfish faster and this swap mostly just thins dead cards for marginally more relevant bodies; if you have any true interaction left in the sideboard it would be better, but working within this list, minimal changes are recommended.