Mammoth Harness

A green answer to flying built as an Aura rather than removal, which tells you most of what made it a curiosity. The clipped-wings clause is the load-bearing half: green has always struggled to interact with evasion, and stapling a flier to the ground at sorcery speed was a real, if clumsy, attempt to give the color a toehold against the air. But the second ability is what makes this a proper combat hex rather than a pure grounding effect. Whenever the leashed creature blocks or is blocked, the other creature in that exchange gains first strike, and since you have cast this on an enemy threat, the other creature is yours. So the harness does two jobs at once: it drags the flier out of the sky, then hands your own blocker or attacker first strike every time the leashed creature enters combat, tilting those fights decisively in your favor. That offensive logic holds up even against a grounded target. Cast on an ordinary ground creature, the flying clause does nothing, but the first-strike rider still functions, turning the Aura into a combat debuff that tilts every fight involving the enchanted creature in your favor. The rate is poor by modern standards and the two-step solution is awkward, but the underlying idea is sharper than the card's reputation suggests. It is a fossil from a moment when green's color pie was still being mapped, and answering fliers was problem enough to spend a whole card solving.