Mercurial Kite

The combat-damage tapper, rebuilt onto a flier. Where the classic version of this idea (Master Decoy and the line of activated tappers behind it) spent mana to tap a creature, this 2/2 does it as a rider on connecting in combat, and adds an untap-denial clause that keeps the target down through its controller's next turn. Because it has flying, the way it actually delivers that damage matters: against a grounded board it can slip through unblocked and never touch a creature at all, so the trigger only fires when it blocks an attacker or trades blows with one. That is the real shape of the card. When the Kite blocks an evasive attacker and survives, it taps that flier and freezes it for a turn, buying a window where the opponent's air threat sits useless while the Kite recovers. The catch is that a stunned creature is still tapped on the Kite's next combat, so it cannot be re-blocked to refresh the lock; the effect is a one-shot tempo swing per target, not a permanent leash. So the body governs the trade carefully: a 2/2 only wins the exchanges it picks, and it picks them in the air. A narrow tool, then, for grinding down a single recurring flier rather than a board-wide answer, doing its work through the damage step instead of an activated ability.