Naiad of Hidden Coves

A cost reducer that only fires on someone else's clock is a strange, pointed thing: it does nothing to advance your own turn and everything to sharpen your reactive game. The discount lands on instants, flash threats, and counterspells, the spells you were always going to hold up anyway, and it turns held-up mana into a persistent tempo edge across every opponent's turn rather than a single burst. Where most cost reduction wants you to dump a hand fast, this asks the opposite: keep the countermagic up, keep the removal ready, and let the reduction accrue over turns you were passing the initiative to the table. The 2/3 body is the quiet part of the design. It sits at a size that shrugs off incidental damage and holds the ground against early aggression, so the enchantment stays online long enough for the discount to matter instead of dying to the first burn spell and taking the engine with it. All of this points one direction: a defensive, utility-sized creature whose combat presence is almost beside the point, built to reward the player who would rather do their work on the stack while everyone else is tapping out.