Kalain, Reclusive Painter

Treasure had spent its first years as pure disposable ramp: a sacrificial artifact that made a color of mana and then vanished. This card converts that transactional resource into a scaling engine. The static ability watches for Treasure mana specifically, and every dork or beater cast off those gold coins arrives with a +1/+1 counter per Treasure spent, so the fodder you were sacrificing anyway is the fodder that pumps your board. The two effects feed each other: the enters-the-battlefield Treasure is the first coin in the till, and any deck already generating tokens for value suddenly has a reason to spend them on creatures rather than on more artifacts or a splash. What keeps the payoff honest is that the counters only apply to Treasure mana, not to any mana: you cannot simply tap lands and get a lord effect, you have to commit the Treasure and forfeit the future flexibility that Treasure exists to provide. The 1/2 body signals the priority clearly; this is not a threat, it is a converter that turns a ramp mechanic into a growth mechanic, sitting at the crossroads of the two colors that generate Treasure most freely.