Lu Bu, Master-at-Arms

Six mana buys a 4/3 with haste that, in the overwhelming majority of games, simply cannot be blocked. That is the whole proposition. Horsemanship functions as absolute evasion (the keyword can only be blocked by other creatures that share it), and because the pool of creatures with horsemanship is confined almost entirely to a single self-contained block drawn from the Romance of the Three Kingdoms source material, outside that pocket the ability reads as flatly unblockable. Haste completes the picture: the moment the mana is available, this legend lands and connects that same turn, no defensive interaction possible. The body is deliberately fragile, a 4/3 that dies to most of the red removal it could ever hope to trade with, so the design puts all of its weight on getting damage through rather than holding ground. The flavor of a famed warlord riding past every defender to end the fight justifies the brute efficiency; this is a clock, not a wall. What preserves it from being a generic mid-sized beater is the historical oddity of the keyword itself, an evasion ability that almost never sees company at the table, which turns a small red attacker into a threat that most decks have no clean way to answer in combat at all.