Cloudthresher

Two cards in one shell, and the green mage decides at cast which one to spend on. The full cost lands a 7/7 with reach that clears the skies and chips two off every player; the cheaper line trades the body away entirely, firing the enter trigger before the creature sacrifices itself. That second mode is the design that mattered: a green sweeper aimed squarely at fliers, available below the rate of the beater it's stapled to. Flash is what knits the two halves together, because the enter trigger can be held until the attack step, dropped in response to a swarm of evasive threats, and then either kept around as a blocker or sent away as a pure burst of removal. The two damage to each player is the tax built into the answer: you take the same scorch you hand out, and in a race of small fliers that symmetry can bite the caster as hard as the target. Green almost never gets to interact at instant speed with anything in the air, and rarely as a one-card spell that doubles as a fat blocker. Evoke is the hinge: a midrange beater and a flexible, two-faced answer occupy the same card, and which one you hold depends entirely on the mana you choose to spend.