Flurry of Wings

The defensive instant that scales off the attacker's own commitment: the more creatures swing in, the larger the wall of flying blockers it conjures in response. That counting clause makes it a punisher for go-wide aggression, since a board built to overwhelm becomes the exact metric that gives the caster a token for every attacker. The trick is the timing window. Cast in the declare-attackers step, it hands you a flying body for each attacking creature—whether you cast it on defense to answer an incoming swing or on your own turn to reward your attackers—and flying lets those Birds block almost anything regardless of how the attack was assembled. The catch is symmetry of information: the attacker has already declared, so they cannot recalibrate, but you have spent a card and three colored pips for bodies that are only as good as the swing was large. A lone attacker yields a single 1/1, which is why this lives at instant speed rather than as a value engine. It wants a crowded battlefield to pay off, and it punishes the player who built one. The three-color cost is the price of putting white's token-making, blue's reactive posture, and green's combat instincts into a single reactive spell, which is the kind of multicolor concession that hard-pins it to decks already committed to all three.