Ruby Storm wins by chaining rituals into Grapeshot or Past in Flames, so free, proactive countermagic is essential — Force of Negation can be cast for free on their turn to stop a key ritual or Past in Flames, and Consign to Memory is a cheap, efficient answer that also disrupts their Manamorphose/cantrip-heavy sequencing. Metallic Rebuke is too slow and mana-inefficient against a deck that can go off in a single turn, so it comes out in favor of proactive disruption. Try to be the beatdown, applying pressure with Cori-Steel Cutter and Tamiyo while holding up Force of Negation to snipe their combo turn. Watch out for Orim's Chant, which can strip your interaction — sequence your counters accordingly.