Ruby Storm's rituals like Desperate Ritual and Pyretic Ritual and their Manamorphose are colored spells, so Consign to Memory cannot counter those, but their colorless artifact spell Ruby Medallion and triggered abilities like Ral, Monsoon Mage's flip trigger or storm triggers are prime targets. Unholy Heat is here mainly to kill Ral, Monsoon Mage before it flips and provides further cost reduction. This matchup is a straight race, so we prioritize efficient, cheap interaction and trim any card that doesn't advance our clock or disrupt theirs.