Change the Equation
Counterspells that only stop cheap spells are a hard sell: a two-mana counter that answers only spells costing two or less is trained on the wrong end of the curve. The second mode is what earns the slot. By carving out red and green specifically, the design targets the two colors that most reliably deploy expensive, game-ending payoffs (the big ramp threat, the haymaker dragon, the overrun-style finisher) and hands blue a hard answer to spells nearly triple this card's own cost, creatures included. That asymmetry is the whole conceit: against a control mirror or an artifact deck the second mode is dead, so the first mode keeps the card from being a blank, but the design is built to punish the ramp and beatdown decks that live above the counter's usual weight class. It is a color-hoser wearing a generalist's clothing, deliberately weakest against the decks that also play cheaply and strongest against the ones that spend big in red or green. What usually takes a narrow, color-locked answer gets folded here into one flexible instant: a conditional hard counter for the cheap spells you always fear, welded to a wide, color-locked hard counter that catches almost anything red or green can cast, dragons and overruns and ramp payoffs alike.
