Ruby Storm has almost no creatures to burn, so our maindeck removal is largely dead weight and should come out for more interaction. Mystical Dispute is only a soft counter here: none of their spells are blue, so it never gets its discount and always costs the full {2}{U}. It counters a spell like Ral, Monsoon Mage or a ritual only if they can't pay {3}, so it's best cast when they're tapped low in the middle of a chain. Flow State adds card selection to find our own countermagic faster. Keep Counterspell, Force of Negation, and Spell Pierce as our premium ways to disrupt their combo turn before they chain through Past in Flames or Grapeshot for the kill.