Verdant Automaton

A colorless body that only grows when you feed it green mana, this construct scales through a mana sink rather than arriving big. The math is deliberately unhurried: four total mana for a single +1/+1 counter, so it converts a glut of late-game lands into incremental growth nobody can answer at the right moment. That makes it mana-flood insurance more than a threat, the kind of design that turns dead draws into a clock without committing an extra card. The green activation cost on an otherwise colorless creature is the quiet trick: it slots into a green deck for the pump but reads as fixing-agnostic artifact fodder for anything that cares about artifacts entering or sitting on the battlefield. Plenty of two-mana creatures have offered a repeatable counter sink; what sets this one apart is the disconnect between its artifact identity and its color-locked engine, a small piece of cross-color design that pays off for decks built to bridge the two.