Ruby Storm wants to chain rituals like Desperate Ritual and Pyretic Ritual into a lethal Grapeshot, so our plan shifts almost entirely toward proactive disruption. Mystical Dispute is a cheap, efficient counter for their blue spells and can also stop key noncreature plays for {2}{U} against everything else they cast, buying crucial time before they assemble their kill. Veil of Summer protects our hand and battlefield from countermagic and punishes any black or blue interaction while making our own spells uncounterable during their turn. Eldritch Evolution and Ghalta are both slow, sorcery-speed or top-end plays that do nothing to stop a combo kill, so they make room for our proactive counterspell package.