Harbin, Vanguard Aviator

A go-wide payload stapled to a two-drop, which is the interesting part: the trigger asks for a board state that most white aggressive decks are already trying to reach, and rewards you for the turn you cross the line rather than for durdling toward it. Five Soldiers attacking is a specific, countable threshold, not a scaling one; the anthem does not get bigger with a sixth or a seventh attacker, so the design pushes you to hit the number and swing, not to overcommit. The +1/+1 turns a wide-but-shallow board into real damage, and the flying rider is the closer: a ground stall full of tokens does not care about a blocker's toughness once every attacker is suddenly in the air. That combination (a mass pump plus evasion, gated behind a tribal quorum) is the token-swarm finisher white and blue soldiers have wanted for a long time, delivered on a body cheap enough to be part of the count it enables rather than a separate investment. The tension it resolves is the classic one for wide aggro: you build the biggest board you can, then run out of ways to punch it through a wall of blockers. Harbin answers that on the turn it matters, provided you have paid the entry cost of actually fielding an army of Soldiers first.