Thunderclap Wyvern

Flash is the line that turns a static lord into an ambush. A creature that pumps your other fliers is a known shape, but most of them arrive at sorcery speed, telegraphing the buff and inviting a clean answer before they ever swing. Casting this at instant speed rewrites that math: it walks into combat as a surprise blocker, ganging up on an attacker while quietly handing every flier you already control an extra point in both directions, or it flashes in on the end step to set up an alpha strike the opponent had no reason to play around. The anthem clause excludes the body itself, so the 2/3 stays a 2/3, which frames the card as a tempo play rather than a free swing. It is built for the deck that wins through the air a point at a time, where the difference between a 1/1 flier trading and a 2/2 flier connecting is the whole game plan, and the flash lets you make that decision after seeing how the turn develops rather than committing to it on your own main phase. The combination of a relevant evasive body, a team-wide buff, and the freedom to deploy at the most punishing moment is more than the rate suggests.