Stone Kavu

A green creature that pays rent to two colors it has no business in: feed it red and it grows wider, feed it white and it grows taller. The red ability is textbook firebreathing, repeatable for as much red mana as you can spare, so a single big turn can turn a 3/3 into a genuine threat; the white side is the quieter half, banking toughness one point at a time to survive combat or trade up. Splitting the two pump modes across two off-colors is the whole point of the design: this is a payoff for a greedy, fixing-heavy base that already produces red and white, not a splash you slot into a two-color list. That conditionality is the price the abilities ask in exchange for being open-ended at all. The era this comes from leaned hard on three-color and Domain themes, rewarding players who stretched their manabase wide, and this Kavu is a tidy expression of that ethos: stretch your colors and your creature stretches with you. As a 3/3 for five it gives back less than it costs on rate alone, but it converts excess mana into stats in two directions at once, the kind of late-game mana sink a fixing-rich deck actually wants.