Goblin Champion
Exalted has almost always lived in white and its allied colors: a defensive, Bant-flavored keyword that rewards the lone attacker, worn by cards like Sublime Archangel and Rafiq of the Many. Handing it to a one-mana Goblin inverts the whole texture of the mechanic. The 0/1 body is the tell: this is not a creature that wants to swing on its own, but one that hangs back and lets its exalted trigger fire on whichever attacker goes in solo. Stack a few, and a single evasive threat picks up +1/+1 from every Champion the turn it attacks alone, while the Champions themselves stay home. The haste is the color-pie signature that overrides the body: it lets the Goblin commit the moment it lands, becoming the lone attacker on the turn it enters instead of durdling behind a wall, an aggression the white originals never had. The deeper friction is deliberate: exalted only triggers when a creature attacks alone, which is directly opposed to how a Goblin deck usually wants to attack (wide, all at once). That contradiction is the design puzzle. It is a Goblin that punishes you for playing Goblins normally, an aggressive tribe's keyword smuggled in from the pacifist end of the color pie, asking you to build a swarm that agrees, sometimes, to send just one.
