Heronblade Elite

Most ramp creatures tap for a fixed number, and their contribution to the board is decoupled from their contribution to your mana. This one welds the two together: it enters as a 1/1 that taps for a single mana on its own, then every additional Human that enters adds a +1/+1 counter, and each counter is another point of power the tap converts into any one color. Board development and mana development stop being separate axes; the wider the Human count grows, the more a single activation produces, with no ceiling other than how many bodies the deck can commit. Vigilance is what keeps this from being a false choice between pressure and acceleration: the creature can swing for its accumulated size and still stand untapped to fund the next spell, so it is a threat and a mana source in the same turn rather than one or the other. The honest cost is fragility. A baseline 1/1 is soft to almost any removal, and the whole engine collapses to a single answer before the counters compound; the payoff scales, but so does the incentive for an opponent to kill it early. It sits in the Human-typal lineage as the piece that inverts the usual relationship between go-wide and ramp: instead of ramping into a wide board, it turns an already-wide board into escalating, color-flexible mana, rewarding a deck that has already spent its cards on creatures.