Snare the Skies

Green's structural weakness is the air: it fields the biggest ground bodies in the game and routinely loses to a one-power flyer it cannot legally block. Reach-granting instants exist to ambush that creature mid-combat, and this one folds in just enough of a bump to win the exchange after the block is declared. Hold it until attackers commit and a free hit becomes a dead flyer; the +1/+1 makes the new blocker one that survives the trade. But nothing on the card pins it to defense. Point it at an attacker of your own for an extra point of damage, push a ground stalemate the other way, or size up a blocker on a creature you expect to fight. The tension that defines the design is its dependence on surprise: an opponent who respects an untapped green source can hold the evasive attacker back, and a one-mana instant whose sharpest line is an ambush sits idle against a board that plays around it. That is the cost of buying timing instead of permanence. Among green's answers to flying it ranks below the fight spells and the reach-granting enchantments that stay on the battlefield, trading durability for the cheapness and flexibility that let it leave mana open for something else.