Skyknight Vanguard

Every attack spawns a body that shows up already in the red zone, tapped and swinging, so it dodges summoning sickness and adds to the damage the turn it appears. That instant-attacker clause is the crux of the design: a 1/2 flyer isn't a threat on its own, but the Soldiers stack up fast. On turn three it puts one in the air and one on the ground, and each subsequent swing widens the board further, feeding go-wide payoffs and anything that counts creatures. The 1/2 frame is what keeps the engine payable on a cheap two-drop: the body blocks respectably but folds to any sweeper and to a single point of removal, so the accumulation never runs away untouched. What makes it slippery is the timing of the trigger. The token is created on attack, before damage, and the value banks the moment the attack is declared. Kill the Vanguard in response and you still hand the opponent a Soldier; the trade is already resolved. This is the aristocrats-of-aggression version of Boros: turning the act of attacking into board advantage, building faster than an opponent light on removal can dismantle. Against a hand short on answers, the accumulation simply wins.