Morselhoarder

The wither-era counter mechanic usually framed -1/-1 counters as decay, something inflicted on a creature to shrink it. Here the counters are inventory. The body arrives pre-shrunk by two counters, a 4/2 instead of a 6/4, and the only way to recover its printed size is to spend it: each counter you remove becomes one mana of any color. That inverts the punishment into a resource you draw down at will, and the inversion runs both directions at once. Activating the ability does not tap the creature and does not subtract stats; it returns them. Crack a counter for mana to help cast a spell, and the same creature grows a point bigger that turn for having done it. So there is no attack-or-ramp dilemma baked into the card: cashing in a counter feeds your mana and grows your attacker in the same motion. The only real decision is pacing. Bank both activations across a couple of turns for two splash spells, or shed both at once to fix two mana now and present a full 6/4. The any-color output is the wrinkle: a creature that only ever asks for one of two colors to cast hands you mana of any color, building a splash inside its own body. It prices ramp and fixing as a conversion of stored counters into spells, with the upside that every activation leaves the elemental closer to its printed size rather than further from it.